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This EPD is representative for Topaz WB Primer (283ME). Topaz WB Primer is a superior-quality water-based acrylic co-polymer-based primer providing excellent alkali resistance, sealing, opacity and binding properties. The declared product provides an excellent white backing for subsequent topcoats. It has excellent penetration into the substrate, hence provides the best adhesion. Ideal as primer on exterior and interior surfaces like walls, ceilings, partitions, etc, it offers the best protection against alkali attack. This product is also approved under MPI # 3 Category of Alkali resistance Primers.