These filters can be applied to metal jar lids to allow your culture to breathe while protecting it from contaminant spores and bacteria. Punch 1/4" hole(s) in your metal lid discs before applying the filter. One to two holes are usually sufficient. Great for projects involving wedge transfers and grain transfers.
So far, so good! I purchased these lids for a NSNS (no soak-no simmer) grain prep method without the risk of wetting out a micropore filter. They’re doing their job on round one, good stuff.
The product is great, shipping was great as well. I have no complaints and will definitely buy more. Unfortunately I ruined all the ones I purchased due to my brand new pressure cooker almost exploding. Something went wrong with it and it ruined all my grains and now I have to throw everything but the jars away. But this was the pressure cookers fault not microppose fault. I will be ordering more in the next day or so. I was very happy with the filters and they came highly recommended. Thank you
First time user. They fit well and seem to be effective at allowing airflow while blocking contam. They are resilient at autoclave temps and feel like a high quality product. Will be purchasing more. And thanks for the sticker that was a cool addition.
A lot better than putting little filters on the lid a nice snug fit the only downside is I live in the UK and the postal charges were more than the items I bought but I couldn’t get them in the UK.