Developed by the International Organization for Standardization (ISO), the ISO 20743 standard has been published to explain the antibacterial activity properties and test methods of all antibacterial textile products, including nonwovens. This standard has been published in various countries with the following title: TS EN ISO 20743 Textile -To determine antibacterial activity in fabrics with antibacterial finish.
This standard provides quantitative test methods to determine the antibacterial activity of antibacterial textile products. These test methods can be applied to all textile products, including fabrics, wadding, clothing, quilts, household items, and fabrics, yarns, and materials for various products, regardless of the type of antibacterial agent used (e.g., organic, inorganic, natural or artificial).
With these tests, based on the intended application and the environment in which the textile product will be used, as well as the surface properties of the textile properties, the most suitable of the following three vaccination test methods are selected to determine antibacterial activity:
- Absorption method: an evaluation method in which the bacterial test suspension is inoculated directly into the samples.
- Transfer method: an evaluation method in which the test bacteria are placed on an agar plate and transferred to the pieces.
- Printing method: an evaluation method in which test bacteria are placed on a filter and reports are printed.
With these tests, the colony plate count method and the luminescence method are specified to measure the bacterial count. Therefore, test methods to determine the antibacterial activity of antibacterial textile products have been developed to meet the need for an international standard.
Within the framework of laboratory testing services, our organization determines the finishing textiles ISO 20743 – Antibacterial fabrics to determine antibacterial activity.
Validation of textile materials with antiviral and antibacterial properties
Validation of antiviral properties according to ISO 18184 and antibacterial activity according to AATCC TM100, AATCC TM30, and AATCC TM147 methods, both for textile materials intended for hospital use and private use.
Verification of the durability of the antiviral and antibacterial properties after domestic washing and other external agents may affect the article’s durability.
Material validation and testing for clean air suits, surgical gowns, and drapes
Carrying out the tests in antibacterial testing lab required by standards EN 13795-1 and EN 13795-1 both for products ready to be placed on the market, imported products that require CE marking, and validation of new materials for this type of medical device.
Tests for surgical masks
Carrying out the tests required by the EN 14683 standard for surgical masks for healthcare use that requires CE marking:
- Bacterial filtration efficiency
- Splash resistance
- Determination of biological load (bioburden)
- Evaluation of biocompatibility and cytotoxicity
Tests for surgical masks according to FDA requirements
Performance of the tests required by the ASTM F2100 standard for surgical masks for medical use by the requirements established by the FDA for the USA.
Verification of compliance with the test requirements of the UNE 0064-1, UNE 0062-2 specifications for disposable hygienic masks, and the UNE 0065 specification for reusable, hygienic masks. Verification of the correct marking of the final product by the specifications and recommendations of the Ministry of Industry, Commerce, and Tourism.
Antibacterial determination activities
Microorganisms have long been known to grow and develop in textile products. In the past, antibacterial applications applied to textile products were made mainly to prevent economic losses caused by moulds. These applications date back to the 17th century, when the textile products used in shipping were treated with iron salts. On the other hand, in the current sense, the first applications were made during WWII when military stores and military textile products were not available due to microorganisms. On the other hand, since the first applications were made mainly to protect textile products, the toxic properties for human health were not taken into account. Antibacterial finishing processes have become increasingly important in textile products. Skin disorders caused by fungi and foul odors produced by bacteria were effective in this.
Antibacterial activity determination studies are carried out in authorized anti bacterial testing laboratories within the scope of microbiology testing. According to the TS EN ISO / IEC 17025 standard, the laboratories are accredited to demonstrate their reliability and impartiality in these studies. It also complies with the standards published by national and foreign organizations. The specific criteria that have been set for the Determination of antibacterial activity are as follows:
- AATCC 147 (Qualitative) Antibacterial activity of tissues, textile evaluation: parallel method transition.
- AATCC 174 (quantitative) Evaluation of the antimicrobial activity of carpets.
- AATCC 100 (quantitative) Evaluation of antibacterial treatments in textile materials.
- ASTM E2149 (Quantitative) Standard Test Method for Determining the antimicrobial activity of antimicrobial dynamic contact conditions.
- ASTM E2180 (quantitative) Test Method Standard for antimicrobial activity in polymeric or hydrophobic materials.
- Textile fabrics ISO 20645 (Qualitative). Determination of antibacterial activity. Agar diffusion plate test.
- ISO 22196 (Quantitative) Measurement of antibacterial activity in plastic, nonporous surfaces.
- TS EN ISO 20743 Textile – Determination of antibacterial movement in textures with antibacterial completion
- JIS L 1902 (quantitative) Antimicrobial tissue test.
Conclusion: In the textile sector, antibacterial-treated textile products are being launched, and this practice is expanding year after year. These textile products unquestionably meet purchaser prerequisites to secure against the adverse consequences of microscopic organisms and not diminish personal satisfaction.