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Your cart is empty.Product Description
Any Regular Mouth 70mm canning jar which are commonly used .
Any wide mouth 87mm canning jar which are commonly used.
Any wide mouth 90mm canning jar which are commonly used.
Can be used within a pressure cooker, steam sterilizer or autoclave,You can also DIY them into regular mouth size or any other smaller sizes.
Used for Mushroom Cultivation
mycogirl
Reviewed in the United States on February 12, 2025
They do not fit in the lid properly and are so thick that the lid will not screw on all the way, and pops back off.
scottyfon
Reviewed in the United States on September 27, 2024
These eliminate the problem of random mold spores landing atop the filter, which will always be moist enough for them to sprout and grow through a filter patch. They won't float up under the lid and get onto this filter. Also, it seems to allow more oxygen into the jar than those little filter patches over a hole drilled in the lid, resulting in faster and stronger growth. They are bleachable and can be used many times.I've switched from these to wide-mouth size for ease in cleaning jars after use.
Ryan
Reviewed in the United States on February 21, 2023
They're thick, definitely reusable and will last through steaming. I used them fluffy side up, and they let a little too much air through and my spawn rapidly started to dry out. Although my jars were in a very dry location, I'll be switching that next attempt.
Shae
Reviewed in the United States on August 11, 2022
Arrived on time, these disc fit perfectly on a regular sized ball jar. They appear to be correct and made strong. I do not know if they work yet as I haven't attempted to use. However they seem sturdy and possibly able to use multiple times. The steam bath will be test 1 and contamination will be test 2. They are significantly less money than you will find on some sites.
Brian A Nolen
Reviewed in the United States on March 4, 2022
I cut them in pieces and RTV'd them over small gas exchange holes in reusable plastic lids. Just what I needed, quality is good.
JAFO
Reviewed in the United States on January 30, 2020
Size is perfect and they arrived super fast. I have two concerns with this product: 1) there are two sides-one smooth and glossy and the other other is felt-like and fuzzy. 2) they are about twice as thick as other brands and distorts too easily. Most likely this happened during manufactureand #1 is causal to #2. I can't help thinking that if both faces were shiny/heatt embossed this would be a non issue. Pretty sure I can't buy these agai and will have to go back my old vendor, bummer I wanted these to work.Pics above: top row: this product, alternating fuzzy side up, fuzzy side down. Bottom row: the 'other guys' product. You can see the fuzzy shiny of you zoom.
Renate Williams
Reviewed in the United States on June 25, 2019
High quality
Heroic
Reviewed in the United States on May 19, 2019
legit , arrived when stated
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