Bel-Art Wide-Mouth &sup1;/ L (1 pt) Polypropylene Mason Jars (Pack of 6) (F10913-0000) Extra large, heavy duty and leak proof design; excellent chemical resistance Highly shock resistant polypropylene, heavy walled Mason jars are ideal for industrial waste sampling, long term storage and a variety of laboratory uses Standard 70mm, G-threaded necks and screw caps with unique grip lugs and removable leakproof silicone rubber ring seal Cap and jar are steam autoclavable at 121 degree C (250 degree F), loosen cap when autoclaving Isolate and ship forensic samples in these highly protective containers, jars fit the Mytivac vacuum extractor for fluid evacuation or pressure dispensing in automotive applications