https://www.avient.com/sites/default/files/2021-10/microbial-susceptibility-of-various-polymers-and-evaluation.pdf
To prepare samples with an active ingredient, a linear low-density poly(ethylene) masterbatch “AMPE 143101” 2 ZANDER ET AL.
The loading of ZPT was reduced from 1500 to 1250, and 750 ppm, and a blue tint colorant masterbatch was added at two levels, 3% and 6% by weight of the final compound.
Markarian, Addit.