12x Quart Rye Berry Grain Spawn

This 12-pack of 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. The white wheat berries and Rye berries used in all of my substrates are GMO-free, organic and pesticide free. This is something I pride myself and my work. I begin with the very best product so you end with the VERY BEST! **This product is NOT for human consumption but for scientific use. *May request wide mouth or narrow mouth, notate on the order or message directly.