AATCC 147

Antibacterial Activity of Textile Materials: Parallel Streak

BioLabTests offers AATCC 147 testing as a quick and simple test to determine the level of antibacterial efficacy in your fabric samples. BioLabTests can accommodate AATCC 147 testing using a variety of organisms relevant to your product’s application. If you are interested in this service, please get in touch.

The AATCC 147 Procedure & Assessment

The test relies on a visual examination after a period of contact between your fabric sample and bacteria. This test is applicable for fabric samples with a diffusible antibacterial agent only. BioLabTests also offers a separate contact plate test for non-diffusible antimicrobials.

1. Preparation

A bacterial suspension of a chosen organism is diluted to an appropriate concentration.

2. Inoculation

Agar plates are inoculated with this suspension in 5 streaks across the plate.

3. Incubation

Fabric samples are placed over the streaks and the plates are then incubated for 18-24 hours.

4. Assessment

After incubation, samples are assessed based on their ability to reduce bacterial growth where they were in contact with the bacterial streaks. They are also measured for any reduced bacterial growth around the samples (diffusible antibacterial agent confirmation). 

Things to note 

Recommendations

AATCC 147 can give quick results before you proceed with more labour-intensive and expensive testing. BioLabTests recommends running either AATCC 147, if your samples contain diffusible antimicrobials, or our contact plate method for samples contain a non-diffusible antimicrobial agent (typically metal ion technology) to first assess antibacterial effect.

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Check out our comprehensive range of TEsting methods

ASTM E2149-13A

ASTM E2149-13A

  • Determining the antimicrobial efficacy of antimicrobial agents under dynamic contact conditions

  • Recommended for testing materials such as fabric, paper, powder and granular material

  • Evaluates the activity of an antimicrobial additive within non-leaching materials

ASTM G21-15

ASTM G21-15

  • Determining the effect of fungi on the properties of synthetic polymeric materials in the form of moulded and fabricated articles, tubes, rods, sheets, and film materials

  • Aspergillus brasiliensis is used as the predominant microbe in testing but it is possible to modify the method to suit a client’s specific needs