Test Criteria.

The term "antimicrobial" is issued if at least two of three efficacy categories have been successfully tested: activity against bacteria (cf. "antibacterial"), mold fungi ("antimycotic") and/or surrogate viruses. The quality label is based on test reports with detailed results.

Hohenstein Laboratories tests the sample in accordance with the standard DIN EN 14119 "Testing of Textiles - Evaluation of the action of microfungi; method B2". The quality label is used to confirm that the test sample has an antimycotic activity against the test strains Aspergillus niger ATCC 6275 and Chaetomium globosum ATCC 6205. The inhibition of fungal growth must be ≥50 % for both test strains compared to a control material.

Hohenstein Laboratories tests the sample in accordance with the standard DIN EN ISO 846 "Plastics - Evaluation of the action of microorganisms; method B". The quality label is used to confirm that the test sample has an antimycotic activity against the test strains Aspergillus niger ATCC 6275, Penicillium pinophilum ATCC 36839, Paecilomyces variotii ATCC 18502, Trichoderma virens ATCC 9645 and Chaetomium globosum ATCC 6205 in the given test procedure of the standard test. The inhibition of fungal growth against the test strains must be ≥50 % compared to a control material.

Hohenstein Laboratories tests the sample in a suspension test developed by Hohenstein (SOP-QM-11.HY.03.054 or SOP-QM-11.HY.03.057) with the unenveloped test virus Bakteriophage MS2 (ATCC 15597-B1) and a contact time of 18-24 hours. The antiviral activity of the test sample must be ≥3 log steps (99.9 %).

The Hohenstein Laboratories are accredited by the DAkkS for all tests above.

Factsheet: Antimicrobial

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Contact
Ben Mead
Managing Director
Hohenstein Institute America