ASTM-E2471 Standard Test Method for Using Seeded-Agar for the Screening Assessment of Antimicrobial Activity In Carpets

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Standard Test Method for Using Seeded-Agar for the Screening Assessment of Antimicrobial Activity In Carpets




1.1 This test method is designed to evaluate (qualitatively) the presence of antimicrobial activity in or on carpets. Use this test method to qualitatively evaluate both antibacterial and antifungal activity.

1.2 Use half strength (nutrient and agar) tryptic soy agar as the inoculum vehicle for bacteria and half strength potato dextrose agar as the inoculum vehicle for mold conidia. Use of half strength agars may reduce undue neutralization of an antimicrobial due to excessive organic load.

1.3 This test method simultaneously evaluates (both visual and stereo-microscopic) antimicrobial activity both at the fiber layer and at the primary backing layer of carpet.

1.4 Use this test method to assess the durability of the antimicrobial treatments on new carpets, and on those repeatedly shampooed or exposed to in-use conditions.

1.5 Knowledge of microbiological techniques is required for the practice of this test method.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


antimicrobial; bacteria; carpet; fungi; low solubility preservative; mold;; ICS Number Code 07.100.99 (Other standards related to microbiology); 97.150 (Floor coverings)

To find similar documents by ASTM Volume:

11.05 (Pesticides and Alternative Control Agents; Environmental Assessment; Hazardous Substances and Oil Spill Response)

To find similar documents by classification:

07.100.99 (Other standards related to microbiology)

97.150 (Non-textile floor coverings Textile floor coverings, see 59.080.60)

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Document Number


Revision Level

2005 R16 EDITION



Modification Type


Publication Date

Dec. 1, 2016

Document Type

Test Method

Page Count

3 pages

Committee Number