Microppose Synthetic Jar Lid Filters, Pack of 10

Cultivators can add these Jar Lid Filters to jar lids to ensure their mushroom spawn has ample oxygen flow without the risk of contamination. Fully Autoclavable.

Synthetic Jar Lid Filters can be placed on top of a jar with ¼” holes to allow for maximum airflow in inoculated grain without compromising the environment. These are a great option for mycologist’s larger grain or spawn batches, as well as mycelium that thrive in higher oxygen environments or require a longer period of incubation.

Features

• Allows for maximum airflow without contaminating the environment
• 70 mm size
• Sold in packs of 10

Place on top of a drilled jar lid insert for mason jars, then screw the ring onto the jar to hold the lid filter in place.