FOAM BLAST® 4213 is an organo-modified silicone/synthetic antifoam product, while FOAM BLAST 4149 is a synthetic block copolymer composition developed as a non-silicone alternative. Low-VOC and APE-free, they can be added at low use levels (0.2-0.6%) during pigment grinding or let-down to achieve long-term foam control and a superior finish. E-mail