https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/remafin-concentrates-polyolefins
Under the Remafin™ brand name, color masterbatches (color concentrates) are specially formulated for use in polyolefin polymers, including high-density, low-density and linear low-density polyethylene (PE), and polypropylene (PP).
PP-R and PP-RCT Pipe & Fittings
Matched color references in concentrates suitable for PP-R and PP-RCT