12 synthetic filter discs 90mm "Wide Mouth" size

You are looking at a lot of 12 synthetic filter discs used for mushroom cultivation. These discs are widely used by commercial producers, as well as those involved in smaller home cultivation. These synthetic filters discs fit precisely on any wide mouth 90mm canning jar which are commonly used by today's cultivators. Usage of these discs allows a fresh, constant air exchange while preventing the entrance of unwanted contaminates. Use them in place of jar lids, or just drill a hole in the lid, and place the discs under the lid. Our synthetic filter discs can be used within a pressure cooker, steam sterilizer or autoclave. They are reusable, highly durable and have a filtration rate of 99.97% that means they will filter down to .3 microns. They come in 90mm sizes but they are all a true 1/16 of an inch thick! This equals to roughly 13 sheets of filter paper.

• 12 Gray Rubber Bottle Stoppers Self Healing Injection Ports for Mason Jar Lids
• Rye Berries, 10 Pound Box
• SEOH Alcohol Lamp/Burner Flint Glass 120 Ml
• Presto 01781 23-Quart Pressure Canner and Cooker
• 100 Scalpel Blades # 11 with Free Handle
• OESS Reusable Inoculating Loop with 50pcs 10uL Nichrome Needle Tips Inoculation Loop for Bacterial Tissue Culture
• 48 gray rubber bottle stoppers, self healing injection ports for mason jar lids
• 20 Pack Sterile Plastic Petri Dishes, 100mm Dia x 15mm Deep, with Lid
• Organic Light Dried Malt Extract DME - Maltoferm 10001-1 Lb
• Malt Extract Agar (MEA) Dehydrated, 100 grams