TAPBIO COMPOSTABLE COLOUR MASTERBATCH TapBio Kol Masterbatches are completely compostable colour masterbatch solutions for compostable extrusion, moulding and thermoforming applications. These are high colour strength masterbatches with a dosage of 2 – 4%. The available colours are:TapBio Kol GreenTapBio RedTapBio YellowTapBio BlueTapBio White