The most aggressive primer commercially available. Excellent product for cold weather applications. If used properly, will soften the surfaces of PVC and CPVC pipe and fittings which is necessary for the proper solvent welding of the materials. Meets ASTM F-656 & SCAQMD 1168 Industry Listings: NSF, LOW VOC with 3 Year Shelf Life. For socket joint fabrication in pint and quart cans. Pipe cement requirements are as follows. For 1/2" pipe size, the average number of joints per qt is 300. For 3/4" pipe size, 200. For 1" pipe size, 125. For 1-1/2" pipe size, 90. For 2 inch, 60. For 3", 40. For 4" pipe size, the average is 30. NSF listed. Item can not ship via Air freight of any kind.