The Hohenstein Quality Label - our test criteria

Description:
To protect the product or minimise odour, textiles are finished with antibacterial agents. The antibacterial effect can prevent bacteria multiplying on or in the product and being distributed further by it.

To test:
The test sample is tested by the Hohenstein Laboratories in accordance with the standard DIN EN ISO 20743 "Textiles – Determination of antibacterial activity of textile products" for which there is accreditation with the DAkkS. The quality label confirms that, in the preparation for the standard test, the test sample demonstrates antibacterial activity in response to the test germs Staphylococcus aureus ATCC 6538 and Klebsiella pneumoniae ATCC 4352. The quality label is subject to a test report with detailed results.

Validity:
1 year
Certified products can be viewed under the following link:
http://www.hohenstein.de/de/certification/certified_products/certified_products.xhtml

Products:

• Textiles with silver finish
• Textiles with an anti-microbial active finish (biocide)

Description:
To protect the product or minimise odour, surfaces and articles for domestic use are finished with antibacterial agents. The antibacterial effect can prevent bacteria multiplying on the product and being distributed further by it.

To test:
The test sample is tested by the Hohenstein Laboratories in accordance with the standard ISO 22196 "Plastics – Measurement of antibacterial activity on plastics surfaces" for which there is accreditation with the DAkkS. The quality label confirms that, in the preparation for the standard test, the test sample demonstrates antibacterial activity in response to the test germs Staphylococcus aureus ATCC 6538 and Escherichia coli ATCC 8739. The quality label is subject to a test report with detailed results.

Validity:
1 year
Certified products can be viewed under the following link:
http://www.hohenstein.de/de/certification/certified_products/certified_products.xhtml

Products:

• Surfaces and articles for domestic use with silver finish
• Surfaces and articles for domestic use with an active antibacterial finish (biocide)

Description:
Healthy human skin is heavily populated with micro-organisms which, as a natural component of the skin, perform an important barrier function for the skin. If the antibacterial textiles are too effective, critics see a possible negative effect on this healthy human skin flora.

To test:
The practically oriented test is based on a standardised model of the human skin flora which simulates germ population, topography and environmental properties of healthy skin. To do this, the model uses germ types from the endogenous micro flora of the human epidermis. The effect of the test material on these germs is quantified during a wearing simulation on the artificial skin/skin flora over a contact period of 18 hours and then evaluated against internal controls or an identical material without antimicrobial finish. If no significant reduction in the number of germs occurs within the wear/exposure time, the textile is considered to be "safe" with regard to the effects on human skin flora.

The existence of supplementary testing for antibacterial effectiveness according to DIN EN ISO 20743 is a prerequisite for obtaining the label.

Validity:
1 year

Products:

• Clothing with antimicrobial finish (e.g. silver)
• Textiles worn close to the body
• Sports clothing, underwear, wellness and functional textiles
• Textiles for sensitive persons such as those with allergies, small children, invalids and elderly persons.

Description:
To protect the product from decomposition or minimise odour, textiles or articles for domestic use are finished with antimicrobial agents. The antimicrobial effect can prevent germs (bacteria, mould or viruses) that populate the product from multiplying and being distributed further by it.

Validity:
1 year
Certified products can be viewed under the following link: http://www.hohenstein.de/de/certification/certified_products/certified_products.xhtml

Products:

• Products with silver finish
• Products with an antimicrobial active finish (biocide)

To test:
The term antimicrobial is used if at least two of the three parameters (antibacterial/antimycotic/antiviral) are achieved. The quality label is based on one or more test reports with detailed results.

Antibacterial:
Test as per the standard DIN EN ISO 20743 "Textiles – Determination of antibacterial activity of textile products" with the test germs Staphylococcus aureus ATCC 6538 and also Klebsiella pneumoniae ATCC 4352 or standard ISO 22196 "Plastics - Measurement of antibacterial activity on plastics and other non-porous surfaces" with the test germs Staphylococcus aureus ATCC 6538 and Escherichia coli ATCC 8739. The antibacterial activity of the test sample must be significant or strong against both test germs.

Antimycotic:
Test as per standard DIN EN 14119 "Testing of textiles - Evaluation of the action of microfungi, process B2" or standard EN ISO 846 "Plastics -- Evaluation of the action of microorganisms on plastics, process B", each with the test germs Aspergillus niger ATCC 6275 and Chaetomium globosum ATCC 6205. The prevention of fungal growth must ≥50 % for both test germs.

Antiviral:
Test developed by Hohenstein in the suspension test (dependent on standards ISO 18184, DIN EN ISO 20743 or ISO 22196) with the non-enveloped test virus bacteriophage MS2 (ATCC 15597-B1) and a contact time of 18-24 hours. The antiviral activity of the test sample must be ≥4 log levels (significant).

The Hohenstein Laboratories have DAkkS accreditation for all above tests.

Description:
Test of impermeability of bedding/casing to mite faeces - allergens with real mite faeces.

To test:
The impermeability of bedding or casings to mite faeces - allergens are tested with a special load test stand. To do this, the test samples are applied with a defined mite faeces - allergen quantity and a one-time load is simulated through pressure. The mite faeces allergen quantity which was able to penetrate through the test sample is then determined by means of an Enzyme Linked Immunosorbent Assay (ELISA). This test setup provides information about the impermeability of the test sample and thus the suitability of the product for persons with allergies. The quality label is subject to a test report with detailed results.

Validity:
1 year

Products:

• Bedding materials
• Casings

Description:
The test evaluates the reduction characteristic of clothing on sweat odours in a real wearing situation. The test can be carried out with different variants depending on the task.

To test:
The practical experiment can prove the anti-sweat-odour effect from the viewpoint of the end user. The test samples are worn by a group of participants in the specific application type (sport, work). The strength of sweat odour on the samples is then assessed by trained odour testers and compared with the reference material with the help of an odour sampler. The quality label confirms that the reduction in sweat odour during a wearer trial could be proven when compared to a control material. The quality label is based on a test report with detailed results.

Validity:
1 year

Products:

• Sport and outdoor clothing
• Workwear
• Body-contact clothing
• Home textiles / seating furniture

Description:
The long-term test assesses the killing effect of textile finishes on the development of a population of house dust mites.

To test:
The review of effectiveness of textiles and finishes against house dust mites is carried out in accordance with standard NF G39-011. House dust mites (Dermatophagoides pteronyssinusauf) are applied to the test sample and controls and the quantity is determined after one week and after two population cycles (= 6 weeks) under optimum conditions. The number of living mites is determined with a hand count with the stereomagnifying glass.

For test samples that do not permit a hand count due to their structure, the allergen content (mite faeces allergen Der p1) is determined after 6 weeks. The quality label confirms that the mite count or allergen content in the test sample has been reduced by at least 90 % in comparison to the control material. The quality label is subject to a test report with detailed results.

Validity:
1 year

Products:

• Textiles finished with agents that are directed against house dust mites.
• Chemicals for spray application intended to kill house dust mites.

Description:
In the cell culture test, immune cells ("sentry cells") are used to record the allergy potential (sensitising potention) of substances that can be released when wearing the test material. The sensitising test thus permits the assessment of an allergenic risk potential of tested substances. This is recorded as a total parameter. The test is not an analysis of the individual allergenic substances.

To test:
The sensitivity test is a screening test to prove an allergenic effect and is suitable as a pre-test to the standard DIN EN ISO 10993-10.

For the test, an extract of the test material is created and incubated with immune cells for 24 hours. The sensitising substances induce the cells to form surface markers to which the specific fluorescence-labelled antibodies are bound. The percentage part of positive cells is determined in the flow cytometer by means of the fluorescence-intensity. The quality label is subject to a test report with detailed results.

Validity:
1 year

Products:

• Medical products of all materials
• Clothes worn close to the body
• Textiles for sensitive persons such as those with allergies, small children, invalids and elderly persons
• Reclaimed textiles that are suspected to trigger allergies
• Cosmeto-, wellness and functional textiles

Product data sheet to download

Description:
Assessment of the aerobic degradability of textile products over a defined test period by means of a controlled earth trench. Subsequent assessment of environmental compatibility through ecotoxicological investigations or chemical analysis (heavy metals).

To test:
The tests take place under
a) application-oriented outdoor conditions or
b) standardised laboratory conditions.

The tests are based on European and international standards that are used to test the decomposition behaviour of materials after being buried in the earth (e.g. EN ISO 11721, EN ISO 846 and DIN EN 13432).

Hohenstein tests the loss in mass after predefined excavation times and makes a visual assessment of the material surface. As standard, the ecotoxicological harmlessness is determined using an agro-toxicological test. In addition, further ecotoxicological tests and/or a heavy metal investigation of the soil samples can be carried out.

Validity:
1 year

Products:

• Yarns, fibres, textile fabrics, clothing
• Technical textiles e.g. for the automobile industry
• Finished textiles
• Recycled textiles

FAQ biodegradability

Description:
Combination of skin tolerance test and sensitivity test.

To test:
The test of skin tolerance (see here for details) is carried out in accordance with the protocol AW-QM-11.08.03.059 based on standard DIN EN ISO 10993-5. The Hohenstein Laboratories have DAkkS accreditation for this test.

The sensitivity test is a screening test to prove an allergenic effect and is suitable as a pre-test to the standard DIN EN ISO 10993-10 (for details, see under "Allergy Friendly"). The quality label confirms that the test sample has met the requirements of both tests. The quality label is based on two test reports with detailed results.

Validity:
1 year

Products:

• Body-contact clothing, e.g. sports clothing, underwear
• Wellness and functional textiles
• Textiles for sensitive persons such as those with allergies, small children, invalids and elderly persons
• Reclaimed textiles

Description:
In the cell culture test, skin cells are used to record the effects of cell-damaging substances (cytotoxins) that can be released when wearing the test material. The test thus enables the assessment of a potential risk of cell damage. This is recorded as a total parameter. The test is not an analysis of the individual cell-damaging substances.

To test:
The test of skin tolerance is carried out in accordance with the protocol AW-QM-11.08.03.059 based on standard DIN EN ISO 10993-5. The Hohenstein Laboratories have DAkkS accreditation for this test.

For the test an extract of the test material is produced which is cultivated over 24 hours with L929 skin cells in different concentrations. The viability of the cells and/or the potential cell-toxic effect of the test material is determined in a quantitive manner in comparison to control cultures. In doing this, a reduction in vitality of more than 30% in comparison to the extracting agent control is classified as a clear cell-damaging effect. The quality label is subject to a test report with detailed results.

Validity:
1 year

Products:

• Body-contact clothing, e.g. sports clothing, underwear
• Wellness and functional textiles
• Textiles for sensitive persons such as those with allergies, small children, invalids and elderly persons
• Reclaimed textiles

Description:
Combination of testing for harmful substances, skin tolerance test and sensitivity test.

To test:

Tested for harmful substances
The consumer product is tested with regard to harmful chemicals. The intended use of various harmful substances, as well as their presence as contamination or a by-product is tested. The tests performed for harmful chemicals are carried out to ensure legal conformity and for the purpose of consumer protection. The test criteria for the certified tests for harmful chemicals exceed the statutory requirements. They include the statutory requirements for test parameters, such as azo dyestuffs or heavy metals, including cadmium and lead. In addition, further tests are carried out or the scope of legal parameters is expanded with regard to the quality label. For example, legally, only 8 substances from the group of polycyclic aromatic hydrocarbons (PAHs) are regulated, however, for the purposes of preventative consumer protection, we test 24 substances. Tests are also carried out for chlorinated benzenes and toluenes, as well as organostannic compounds. For some parameters, there are only limit values for finished textile products. However, we already test these parameters for you one stage earlier on the textile chemicals.

The tests for the absence of harmful substances are based on the test programme and method of the ECO PASSPORT by OEKO-TEX®. However, depending on the labelled product, there may be minor deviations from the test programme.

Skin friendly & hypoallergenic
The test of skin tolerance (see here for details) is carried out in accordance with the protocol AW-QM-11.08.03.059 based on standard DIN EN ISO 10993-5. The Hohenstein Laboratories have DAkkS accreditation for this test.

The sensitivity test is a screening test to prove an allergenic effect and is suitable as a pre-test to the standard DIN EN ISO 10993-10 (for details, see under "Hypoallergenic"). The quality label confirms that the test sample has met the requirements of both tests. The quality label is based on two test reports with detailed results.

Validity
1 year

Products
Textile chemicals, including textile dyes and auxiliary agents, for non-commercial / non-professional use, which are provided directly to the end consumer.

Description:
ESD (electrostatic discharge)-clothing must be anti-static to protect electronic components from damage. However, it must also be breathable to ensure a high level of wear comfort and not compromise the wearer's performance.

To test:
The electrostatic behaviour is tested with a resistance measuring device in accordance to DIN EN 61340-4-9 (point-to-point resistance).

The breathability is measured using the water vapour resistance with the thermo-regulation model for human skin (Skin Model) as per ISO 11092. In doing this, the water vapour resistance of the sample made available as the fabric layer is measured. The basic investigations enable the assessment of the "breathability activity" of the different materials both as an absolute value and as a comparative value.

Validity:
1 year

Products:
ESD clothing

Product data sheet to download

Description:
Test of the down and feather tightness in textiles and finished products.

To test:
Two test pillows with the defined dimensions are produced from the textile to be tested and the filling material. The pillows are subjected to a defined number of strokes and pillow movements in a leakage testing device. The number of down and/or feather parts that have passed through the textile after the end of the test are counted.

DIN EN 12132-1 Test of down-tightness of textiles
- Simulated pillow stress

DIN EN 12132-2 Test of down-tightness of textiles
- Shock test

Validity:
1 year

Products:

• All types of down and feather beds and cushions
• Clothing with down and feather fillings
• Sleeping bags
• Slippers

Description:
Washing machines with automatic dosing system together with the necessary detergent components.

To test:
Quality label on the basis of the comparable product tests using the in-house methods.
Various primary and secondary washing effects (removal of stains, degree of whiteness, greying) while using the automatic dosing system and detergent from the manufacturer are compared with industry-standard market products and manual dosing. The accuracy of the automatic dosing system was also tested.

Validity:
1 year

Products:

• Washing machine

Description:
Test of water vapour resistance after care treatment(s)

To test:
Quality label on the basis of the comparable product tests using the in-house methods.

Test textiles are treated with the corresponding products. After several care treatments, the water vapour resistance is measured to test whether there is a negative influence on the breathability.

Validity:
1 year

Products:

• Fabric conditioner

Description:
Tested quality: STEAM REFRESH FUNCTION
Investigation of a special/supplementary programme for the reduction of wrinkles on textiles.

To test:
Quality label on the basis of a comparative product test using in-house methods.
Test textiles are specifically wrinkled (washing process, simulated use) and then treated in different ways, in some cases using the special/supplementary programme (drying, steam+refresh). The required ironing effort and reduction in wrinkles of the differently prepared textiles are subsequently compared and assessed.

Validity:
1 year

Products:
Dryer

Description:
Neutral testing and assessment of innovative technologies in the laundry sector in order to provide support to the market launch.

To test:
After appropriate tests, the Hohenstein Institutes certify special technical features or innovative devices and methods for the care of textiles in industrial laundries and textile cleaning plants as well as materials that are treated through industrial cleaning. The focus here is on an improved process result and, specifically, the resource efficiency compared with the current status of technology.

Validity:
1 year

Products:

• Process for commercial laundries and textile cleaning (plant)
• Machines for commercial laundries and textile cleaning (plant)
• Materials that can be prepared in commercial laundries

Product data sheet to download

Description:
Neutral testing and assessment of innovative technologies in the textile branch in order to provide neutral support to the market launch and position of a technology leader.

The physical "cooling effect" of textile materials is measured with the WATson and is a measure of the evaporative cooling of a textile during sports activities (liquid sweat).

To test:
The measurement is carried out with the heat generation tester (WATson) in accordance with a validated Hohenstein method. In doing this, the physical evaporative cooling performance of sweat/water is measured in watts for the sample made available as the fabric layer. The physical cooling effect of different materials can be assessed in a comparative way and evaluated using the maximum achieved cooling performance for the current technology leader.

Validity:
1 year

Products:

• Functional underwear
• Sportswear
• Cooling towels

Description:
In the "climatic comfort" test, office chairs are tested with regard to their thermo-physiological and skin sensorial properties. Test values were determined in the research project ZIM-KF2136735CJ4.

To test:
The water vapour resistance is measured using a thermal manikin. Furthermore, the skin sensorial properties of the cover is determined with three different measuring values. The test determines whether the tested textile quickly feels damp (contact point number), whether it sticks to the damp skin (wet cling index) and whether a drop of sweat is quickly absorbed (sorption index). Experts from the Hohenstein Institute then derive an assessment from the results of the tests using limit values. The label can be granted with an assessment of "very good" and "good".

Validity:
1 year

Products:

• Office chairs (seats must consist of a cover, upholstery material & seat cushion)

Description:
The pressure profile for compression stockings can be gradually increasing, gradually decreasing or remain constant. The definition of pressure and pressure profile is based on their characteristics and is the responsibility of the manufacturer. The Hohenstein Institutes test and confirm the manufacturer's data if related to this.

To test:
Within the compression test, the pressure and pressure profile of compression stockings is measured using the test device HOSY. To do this, a sock is fixed in the measuring device and stretched to the specified extent. The compression is calculated from the determined force values that the textile exerts. If requested, the result is listed in the Hohenstein Quality Label "Compression and Pressure Profile".

Validity:
1 year

Products:

• Sports socks
• Travel socks
• Wellness socks

Product data sheet to download

Description:
The test assesses whether the functionality of the textile is based on "nano-technology", that it is fit for purpose and whether there are possible biological risks.

To test:
The test of nano technology comprises:

• the determination of the type of nano finish
• the visual assessment of the nano finish using the scanning electron microscope
• the quantifying of the finishing effects (e.g. dirt repellent through contact angle measurements of characteristic liquids, anti-microbial effect through Nano-Ag, UV protection through Nano-Ti/Nano-ZnO
• the determination of mechanical fit for purpose
• the determination of wash permanence and the determination of breathability and biocompatibility.

The test programme is tailored to the textile material and the application area of the textile. The test is carried out with the new condition textile and under realistic conditions.

Validity:
Infinitely or for as long as the article is produced

Products:
All textile materials (e.g. everyday textiles, textiles from the outdoor sector, workwear / industrial garments, accessories, furnishings etc.)

Product data sheet to download

Description:
The fit test determines the fit of clothing. The test determines whether it corresponds to the required ready-made size.

To test:
The assessment of fit is carried out by experienced clothing technicians at the Hohenstein Institute. The fit of an item of clothing is tested on persons whose body size corresponds to the required ready-made size. The test checks that the fit does not restrict the movement options of a person and the appearance and functionality of the textile.

Grading scale
The grade has to be "fits" to allow the Hohenstein Quality Label to be granted.
Fits = no defect in fit
There are no relevant fit defects which would compromise quality.

Validity:
1 year

Products:
All types of clothing

Product data sheet to download

Description:
The fit test determines the fit of clothing. The test determines whether it corresponds to the required ready-made size.

To test:
The assessment of fit is carried out by experienced clothing technicians at the Hohenstein Institute. The fit of an item of clothing is tested on persons whose body size corresponds to the required ready-made size. The test checks that the fit does not restrict the movement options of a person and the appearance and functionality of the textile.

Grading scale
The grade has to be "fits" to allow the Hohenstein Quality Label to be granted.
1.0 (very good)= fits = no defects in fit
There are no relevant fit defects which would compromise quality.

Validity:
escaping

Products:
All types of clothing

Description:
Classification in accordance with DIN EN 14533 - "Flammability of bedding"

To test:
The classification of the flammability of bedding is based on two sources of ignition. The flammability is tested using a smouldering cigarette (DIN EN ISO 12952-2) and with a small naked flame (DIN EN ISO 12952-4). The classification is class A, B or C.

Validity:
1 year

Products:
Bedding

Description:
The assessment system for duvets is used to classify the heat isolation and moisture management, as a person would experience with practical use of the duvet. Two graphics are attached to the investigation report and can be used to estimate the required heat insulation class. These help the retailer to advise the customer and the customer to select the correct duvet.

To test:
The effective heat insulation of the complete duvet is measured using a thermal manikin. The duvet is then assigned to one of three heat insulation classes. (1 * – particularly suitable for high temperatures, 2 ** – particularly suitable for moderate temperatures, 3 *** – particularly suitable for low temperatures). In addition, the Skin Model is used to measure the material-specific heat and water vapour resistance (breathability), the water vapour absorbency and the buffering capacity of water vapour (sweat absorption ability). Experts from the Hohenstein Institute use the results from the test to determine sleep comfort grades for warm and cold environmental climates. This grade can range from 1 "very good" to 4 "unsatisfactory".

Grading scale
The grade has to be at least 2.5 (good) to receive the Hohenstein Quality Label.

Validity:
1 year

Products:
Duvets for adults for fillings made of down, synthetic, or natural or synthetic fibres

Product data sheet to download

Description:
The assessment system can classify the actual sleep comfort of children's duvets, as experienced in real-life use. The sleep comfort for children's duvets can be listed for warm and cold conditions.

To test:*
In addition, measurements with the Skin Model are used to measure the material-specific heat and water vapour resistance, the water vapour absorbency and the buffering capacity of water vapour.

The results of the assessment system delivers sleep comfort grades for warm and cold environmental climates. This grade can range from 1 "very good" to 4 "unsatisfactory".
The grade has to be at least 2.5 to receive the Hohenstein Quality Label.

* The effective heat insulation is measured using a thermal child manikin.

Validity:
1 year

Products:

• Duvets for children (1 m x 1.35 m) with fillings of down, synthetic or natural fibres

Product data sheet to download

Description:
The evaluation system is used for classifying the sleeping climate (heat and moisture management) of children's mattresses as perceived in practical use.

To test:
In addition, measurements with the Skin Model are used to measure the material-specific heat and water vapour resistance (breathability) and the water vapour absorbency. The drying procedure for children's mattresses is also determined.

The statements of the evaluation system provide a sleeping comfort grade characterising the thermo-physiological properties of the mattress. This grade can range from 1 ‘very good’ to 4 ‘unsatisfactory’. The grade has to be at least 2.5 (good) to receive the Hohenstein Quality Label.

Validity:
1 year

Products:

• Bed mattresses for children
• Mattress inserts for bassinets and carry bags

Product data sheet to download

Description:
The Hohenstein Institute assessment system is used for classifying the sleeping climate (moisture management) of mattresses as perceived in practical use. In addition, the ergonomic characteristics of mattresses are determined.

To test:
With the test procedure, the Skin Model is used to measure the material-specific water vapour resistance, in other words, the breathability, as well as the water vapour absorbency and release of the mattress. From an ergonomic perspective, the mattress characteristics such as point elasticity, bending elasticity, shoulder zone effect and body zone support are tested. From the test results, experts from the Hohenstein Institute determine the grade for climate comfort and ergonomic comfort. The grades can range from "very good" to "unsatisfactory". The grade has to be at least "good" to receive the Hohenstein Quality Label.

Validity:
1 year

Products:
Mattresses

Description:
With the assessment system for duvets, the heat insulation is classified as a person would experience with practical use of the duvet. Two graphics are attached to the investigation report and can be used to estimate the heat insulation class. These help the retailer to advise the customer and the customer to select the correct duvet.

To test:
The effective heat insulation of the complete duvet is measured using a thermal manikin. The duvet is then assigned to one of three heat insulation classes. (1 * – particularly suitable for high temperatures, 2 ** – particularly suitable for moderate temperatures, 3 *** – particularly suitable for low temperatures)

Validity:
1 year

Products:
Duvets for adults for fillings made of down, synthetic or natural fibres

Product data sheet to download

Description:
The water vapour resistance ("thermo-regulation model") is measured using the Skin Model and is a measure of the transport of (vapourous) sweat through the textile.

To test:
The measurement is taken using the thermo-regulation model for human skin (Skin Model) in accordance with ISO 11092. In doing this, the water vapour resistance of the sample made available as the fabric layer is measured. The basic investigations enable the assessment of the "breathability activity" of the different materials both as an absolute value and as a comparative value.

Validity:
1 year

Products:
All materials that come into direct contact with the body

• Finished or laminated textiles for outdoor clothing
• Knitwear for functional wear and everyday wear, pullovers, workwear and protective clothing
• Textiles for outerwear and bedding
• Mattresses and mattress protectors (casings)
• Duvets and pillows
• Vehicle seats

Product data sheet to download

Description:
The physical "cooling effect" of textile materials is measured with the WATson and is a measure of the evaporative cooling of a textile during sports activities (liquid sweat).

To test:
The measurement is carried out with the heat generation tester (WATson) in accordance with a validated Hohenstein method. In doing this, the physical evaporative cooling performance of sweat/water is measured in watts for the sample made available as the fabric layer. The physical cooling effect of different materials can be assessed comparatively and evaluated using the maximum achieved cooling effect of the current technology leader.

Validity:
Unrestricted (if the certified article has the technology leader within it and is produced in an unchanged form)

Products:

• Functional underwear
• Sportswear
• Cooling towels

Description:
This test determines the sensation of the textile on the skin. By using appropriate measurement analysis, these sensations can be presented in figures and therefore be compared.

To test:
Different measurements are used to evaluate the characteristics of a textile that influence the skin sensory comfort:

• The wet cling index shows how strongly a textile sticks to skin that is dampened by sweat.
• The sorption index describes how quickly a drop of sweat is absorbed by the textile.
• The surface index comprises the hairiness or smoothness of a textile.
• The number of contact points between the textile and skin specifies whether a textile feels scratchy or stiffness.
• The stiffness is important for the smoothness of the textile on the body.
• The water vapour permeability index describes, as a thermosphysiological component, the heat and moisture management that is also important for the sensation of the textile on the skin.

Validity:
1 year

Products:
All textiles that come into direct contact with the body, e.g.:

• Underwear
• T-Shirts
• Pullovers
• Bed linen
• Socks and tights
• Towels

Learn more

Description:
The measurements quantify the characteristics of use for outdoor clothing.
The parameters "breathability", "water tightness" and "air permeability" (wind protection) are taken into account.

To test:
The water vapour resistance is measured using the thermoregulation model for human skin (Skin Model) as per ISO 11092 (on the fabric layer). The basic investigations enable the assessment of the "breathability activity" of the different materials both as an absolute value and as a comparative value.

The water tightness is measured for the surface and also the seams in accordance with DIN EN ISO 20811. The air permeability is measured in accordance with DIN EN ISO 9237.

Products:

• Outdoor (rain) clothing
• Coated textiles
• 2 or 3-layer laminate

Validity:
1 year

Description:
The measurements quantify the characteristics of use for children's outdoor clothing.
The parameters "breathability", "water tightness" and "air permeability" (wind protection) are taken into account. The durability can also be classified.

To test:
The water vapour resistance is measured using the thermoregulation model for human skin (Skin Model) as per ISO 11092. The basic investigations enable the assessment of the "breathability activity" of the different materials both as an absolute value and as a comparative value.
The water tightness is measured for the surface and also the seams in accordance with DIN EN ISO 20811. The air permeability is measured in accordance with DIN EN ISO 9237.
The durability is characterised by means of the textile technology tests for maximum force and scuff resistance.

Validity:
1 year

Products:

• Outdoor (rain) clothing for children
• Coated textiles
• 2 or 3-layer laminate

Description:
When checking the physiological comfort of medical products such as bandages, orthoses etc., the microclimate between the product and the skin of the wearer is investigated. Test values were determined in the research project AiF no. 11283. Compliance with these values is necessary for registration in the catalogue of therapeutic appliances for the medical service.

To test:
The heat and moisture management of a bandage to be tested is determined using three test methods. These include the measurement of heat and water vapour resistance and the buffering capacity of water vapour using the Skin Model. The smoothness of the textile surfaces of the tested material is measured using the surface index, part of the skin sensory tests.

Grading scale
Grade 1.0 - 1.5 = very good
Grade 1.6 - 2.5 = good
Grade 2.6 - 3.5 = satisfactory
Grade 3.6 - 4.0 = inadequate

The grade can be between 1.0 (very good physiological comfort) and 4.0 (inadequate physiological comfort).
The grade has to be above 2.5 for a product to be allowed to bear the Hohenstein quality label.

Validity:
1 year

Products:

• Medical bandages and orthotics pads
• Sports bandages

Product data sheet to download

Description:
The physiological wear comfort of clothing is determined, on the one hand, through the heat and moisture management, which is measured with the Hohenstein Skin Model and, on the other hand, through the skin sensorial properties. The sensitivity is quantified by means of skin sensory tests which involve a textile coming into contact with the skin. The measurement results according to laboratory apparatus represent these sensitivities in figures, which can then be assessed both absolutely and comparatively.

To test:
The Hohenstein Skin Model for human skin (Skin Model; standardised as per DIN EN ISO 11092) determines the heat and moisture transport processes. Different strengths of sweat are simulated and corresponding parameters are defined (e.g. heat isolation, drying time). Different activity levels of the wearer and thus different sweat scenarios are taken into account and defined in accordance with corresponding parameters. The skin sensorial properties of a textile are determined with five different measuring values. For example, the test determines whether the tested textile quickly draws away sweat from the skin and feels pleasant to the skin. With the help of the test results for heat and moisture management and the skin sensory parameters, the wear comfort rating of the tested clothing can be calculated. The parameters and their weightings can be adjusted depending on the range of utility of the textile. Thus different evaluation formulae are used for sportswear than for everyday clothing.

Grading scale
Grade 1.0 - 1.5 = very good physiological comfort
Grade 1.6 - 2.5 = good physiological comfort
Grade 2.6 - 3.5 = satisfactory physiological comfort
Grade 3.6 - 4.0 = inadequate physiological comfort

The grade can be between 1.0 (very good wear comfort) and 4.0 (inadequate wear comfort).
The grade has to be above 2.5 for a product to be allowed to bear the Hohenstein quality label.

Validity:
1 years

Products:

• Knitwear for functional wear and underwear, work and protective clothing, pullovers, T-shirts
• Woven fabrics for work, protective and outerwear
• Socks

Product data sheet to download

Description:
The tests are used to test the suitability of textiles for the wellness sector. Wellness textiles should feel pleasant on the skin and and retain their wellness characteristics after washing.

To test:
The skin sensorial properties of a textile are quantified (assessed) with five different measuring values. This includes, for example, whether the textile demonstrates a good surface structure and feels pleasant on the skin. Furthermore, the thermo-physiological characteristics are measured via heat and water vapour resistance with the thermo-regulation model for human skin (skin model; standardised as per DIN EN ISO 11092). The skin sensory wear comfort is then determined with the help of the measurement results. To receive the label, this must be at least "good" (< 2.5).

In addition, the colour-fastness as per ISO 105-B02, the dimensional stability after 20 care treatments and wash resistance must be tested. The suitability of the care instructions is determined using the results, and to receive the label, it must also be at least "good".

Validity:
1 year

Products:

• Clothing textiles for the wellness sector
• Dressing gowns
• Towels

Product data sheet to download

Description:
The aim of the investigation is to assess the opacity of textiles.
The opacity of clothing is also tested using a pass/fail evaluation.

To test:
To determine the opacity, spectroscopic comparative measurements are taken with two different skin types and three contrast colours. The opacity of these results is calculated using these results.

The evaluation matrix determined with test persons is used to evaluate the opacity of an item of clothing with "accepted" or "not accepted" in the dry and wet state. The clothing is then declared as a "Pass" or "Fail".

Validity:
1 year

Products:

• Textiles for clothing (e.g. blouses, shirts, T-shirts, swimwear)
• Textiles for workwear / industrial garments for, for example, doctors, nursing staff (e.g. tunics), etc.

Description:
With these standards, the UV protection factor (Ultraviolet Protection Factor, UPF) for textiles and similar materials (e.g. foils) is determined in the new condition without stress.

To test:
The UPF permits an evaluation of the UV protection of textiles with consideration of the spectral composition of sunlight and the skin sensitivity of the person.

With the Australian/New Zealand standard (AS/NZS), the sun spectrum for Melbourne, Australia is used.

The textiles are measured in an unstretched new condition. Depending on the calculated UPF, the UV protection is described as "good" (UPF 15, 20), "very good" (UPF 25, 30, 35) or "excellent" (UPF 40, 45, 50, 50+).

Validity:
1 year

Products:

• Clothing textiles
• Shading textiles (e.g. sunshades, blinds, roller blinds, foils)

Product data sheet to download

Description:
With these standards, the UV protection factor (Ultraviolet Protection Factor, UPF) for textiles and similar materials (e.g. foils) is determined in the new condition without stress.

To test:
The UPF permits an evaluation of the UV protection of textiles with consideration of the spectral composition of sunlight and the skin sensitivity of the person.

The test is carried out in accordance with the European Standard (DIN EN 13758), which uses the sun spectrum for Albuquerque (USA) and which corresponds to the sun radiation in Southern Europe.

The textiles are measured in an unstretched new condition. Depending on the calculated UPF, the UV protection is described as "good" (UPF 15, 20), "very good" (UPF 25, 30, 35) or "excellent" (UPF 40, 45, 50, 50+).

Validity:
1 year

Products:

• Clothing textiles
• Shading textiles (e.g. sunshades, blinds, roller blinds, foils)

Product data sheet to download

Description:
Neutral evaluation for the purchase of leasing textiles or textiles that should be cleaned as per the conditions of industrial laundries and which should be usable for as long as possible.

To test:
The Hohenstein Quality Standard 701 ff defines the minimum requirements of leasing textiles with reference to:

• Colour-fastness, mechanical characteristics and care characteristics of the textiles
• Resistance of additions/components such as buttons and zip fasteners
• Reprocessing capability in textile service operations
• Fit of ready-made items of clothing (optional)
• Wear comfort (optional)

The tests include laboratory tests and real wash treatments as per the conditions of the industrial laundries. There is also an opportunity to test individual components for resistance and then to make an item of clothing from individual tested components and have it certified.

Validity:
1 year

Products:

• Workwear for hospitals, nursing homes, food processing businesses, hotels and industry
• Terry towels and mattress covers
• Shirts and blouses
• T-shirts and polo shirts
• Flat linen from hotels and hospitals (table linen, bedding)
• Business clothing

Product data sheet to download