Japanese Standards Association

Textiles-Determination of antibacterial activity and efficacy of textile products
 N JIS L 1902

Annotation

This Standard specifies quantitative and qualitative test methods to determine the antibacterial activity of all antibacterial textile products including nonwovens and antibacterial efficacy.

This Standard is applicable to all textile products, including cloth, wadding, thread and material for clothing, bedclothes, home furnishings and miscellaneous goods, regardless of the type of antibacterial agent used (organic, inorganic, natural or man-made) or the method of application (built-in, after-treatment or grafting).

Based on the intended application and on the environment in which the textile product is to be used and also on the surface properties of the textile properties, the user can select the most suitable of the following four determination methods on determination of antibacterial activity.

a) Absorption method An evaluation method in which test bacterial suspension is inoculated directly onto the specimens.

b) Transfer method An evaluation method in which test bacteria are placed on an agar plate and transferred onto the specimens.

c) Printing method An evaluation method in which test bacteria are placed on a filter and printed onto specimens.

d) Halo method A qualitative method to evaluate by the existence of halo

The colony plate count method and the ATP (ATP = Adenosine Tri-phosphate) luminescence method are also specified for measuring the enumeration of bacteria.

The evaluation of photocatalytic antibacterial efficacy treated on the photocatalytic finished textile product shall be carried out according to JIS R 1702.