EL0746 NPT Poly Base is formulated as a press-ready non-phthalate low bleed plastisol base used to mix colors for printing on 100% Polyester. NPT Poly Base has great dye migration resistance, however, it should always be used with NPT Super Poly White or where severe bleeding is a problem we suggest EL0266 Barrier Base (Grey) as an under base for maximum protection against dye migration.