• 32 Mushroom Gas Exchange Filters .22 Micron 32 Count
  • Mason Jar Lid fitted with an injection port and .22 micron filter for gas exchange for mushroom spawn and liquid culture
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Gas Exchange .22 Micron Self Adhesive Filter Patches (32 Ct)

Gas Exchange .22 Micron Self Adhesive Filter Patches (32 Ct)

$9.95
$9.95 $9.95
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Warranty & Refund Policy

Growing Supplies Warranty and Refund Policy

  • We accept returns for all of non-substrate mushroom growing products in new condition with the original packaging within 30 Days after placing your order, with the exception of Agar Agar. 
  • Shipping fees and sales tax are non refundable.
  • Buyer pays return shipping.
  • We issue store credit only. 
  • No returns on sale items.

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SKU: FP32

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Features

  • The best gas exchange filters on the market today.
  • Each sheet has 32 reusable 3/4" round filters specifically engineered for gas exchange.
  • A must if you're making substrate or liquid culture jars.
  • Creates optimal air exchange for spawn and liquid culture jars.
  • Reusable and autoclavable.
  • Filter patch may be affixed to either side of the lid.
  • great for sourdough starter in mason jars.

    We use these filter patches on our spawn jars and they work great.