Clear primer is an NSF-listed, aggressive primer for use on all schedules and classes of PVC and CPVC pipe and fittings. It removes contaminants such as surface dirt, grease and grime as well as softens the pipe surface to allow for a fast, secure solvent weld. Its clear finish will not stain most surfaces and applies easily with included in-lid dauber. Low VOC, high performance primer meets California South Coast Air Quality Management Districts (SCAQMD) 1168/316A or BAAQMD Method 40 requirements, meets ASTM Standard F656 and complies with NSF/ANSI 61 health effects requirements.