This spawn jar lid will fit all widemouth (86 mm) canning jars. It is intended to be used atop jars of live spawn or mycelium. The lid is equipped with a super heavy duty injection port and a 0.3 µm synthetic filter disc (29 mm diameter) that allows for contaminant-free gas exchange. The lid and all components are 100% autoclavable.
The heavy duty injection port is of the highest quality and is able to withstand hundreds of repeated injections before needing to be replaced. The synthetic filter disc is factory-cut and 100% reusable.
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