The Microstar Lab

Bacterial Test - ASTM E1428

Standard Test Method for Evaluating Performance of Antimicrobials in or on Polymeric Solids Against Staining by Streptomyces species (A Pink Stain Organism)

In this test, samples are placed onto an agar plate that has been seeded with the bacterium, Streptomyces species ATCC 25607 (deposited as Streptoverticillium reticulum) and allowed to incubate for 14 days.

Bacterial Testing - ASTM E1428 - Polymeric Solids Bacterial Testing
  • Samples are evaluated for staining from the pink bacterium and also for any zone of inhibition.
  • Evaluation of dark-pigmented test samples may mask the staining.

ISO/IEC 17025: 2017 accredited by A2LA