Ks-Tek 3Pcs Wide Mouth Liquid Culture Lid Food Grade Plastic Grain Spawn Cultivation Mason Jar Lid with 0.22um PTFE Syringe Filter & 20mm Self Healing Injection Ports For Mushroom auspowers_batchone these quality acetal barb ball

these quality acetal barb ball valves won't stick like PVC ball valves

Stainless steel spring and long pin

Acid changes color based on purity

Lock-in & Lock-out Design --- The slides are 3-fold full extension

Ks-Tek 3Pcs Wide Mouth Liquid Culture Lid Food Grade Plastic Grain Spawn Cultivation Mason Jar Lid with 0.22um PTFE Syringe Filter & 20mm Self Healing Injection Ports For Mushroom auspowers_batchone these quality acetal barb ballKs Tek 3Pcs Wide Mouth Liquid Culture Lid Food Grade Plastic Grain Spawn Cultivation Mason Jar Lid with 0. 22um PTFE Syringe Filter & 20mm Self Healing Injection Ports For Mushroom Quantity: 3pcs Colour: green Lid Material: food grade Polypropylene Lid diameter: 86mm Fit for all Wide Mouth Mason Jar These lids can be used in a microwave, autoclave or pressure cooker. Our professional grade autoclavable wide mouth jar lids are built to be lab quality,