Weldon 10216 Weld-On P-68 Primer Cements, PurpleWeldon 10216 Weld-On P-68 Primer Cements, Purple, Features; For surface preparation of all PVC and CPVC pipe and fittings prior to cement application; If used properly, P-68 will soften pipe and fitting surfaces which is necessary for the proper solvent welding of the materials; Meets ASTM F-656 and SCAQMD 1168 Industry Listings: NSF, UPC, LOW VOC; 3 years minimum shelf life; Purple; Available for sale in California; 10216: 1/4 pint; 10214: 1/2 pint