Porous petri dish

I was wondering if there is a type of glass dish with small holes in it to use as a filter. I've found a few but they are either fritted glass disks or a type of funnel.


I was looking for something similar to just a petri dish with no stems or inserts.




The closest I could think of are nozzle cover lids. Wouldn't such tool be ineffective at 'filter'-ing substances nonetheless?


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