Micron Air Filters
Synthetic Filter Discs
These filters fit neatly within the rim of spawn jars underneath the lid, allowing air exchange but preventing the passage of contaminants. Sterilizable and reusable for life (not for food canning) 99.97% efficient filtration down to .3 microns.
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Hey, just wanted to let you know that the spores were A-ok... 3 days and all 12 jars are crazy white already & contam. free! I love you guys and your product! Thanks a million.