12x Wide Mouth Mason Jar Lids for Mycology

Description

This 12-pack of Wide Mouth professional jar lids is crafted to maximize colonization times while avoiding the mess of silicone and cotton-like polyfill - EW! From beginning to advanced mushroom growers, this is the perfect addition to your jars. Contamination is often due to excessive moisture, an excessive amount of fresh air exchange, or a poorly sealed lid. With the self-healing injection ports, you no longer have to worry about silicone standing up to heat after numerous exposures; the port works like it's new! The 0.2 micron filter disk is included under a 1/4" hole to ensure proper gas exchange with adequate filtration of external microbes. This is a MUST-HAVE for any avid participant in mycology.