Oatey Oatey Hercules 60447 Unpurple Primer For PVC And CPVC with Jumbo Dauber In Cap, 32 Ounces Lo-V.O.C. Solvent Cement 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 Meets ASTM F656 To soften and prepare surface of PVC pipe and fittings Special purple dye appears clear, purple color revealed only under UV light For all schedules