Oatey Purple Primer is an NSF-listed, aggressive primer for use on PVC and CPVC pipe and fittings. Lo-V.O.C. Primer meets California South Coast Air Quality Management District (SCAQMD) 1168/316A or BAAQMD Method 40 and various environmental requirements. Removes surface dirt, grease and grime as well as softens the pipe surface to allow a fast, secure solvent weld. For use in areas where plumbing code calls for verification that a primer has been used. Meets ASTM F656.