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

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