SimPure Syringe Filter PTFE Hydrophobic Membrane Filter 0.22µm, 13mm,100Pk | 0.22µm Pore Size, 13mm Disc Diameter, HPLC and GC Needle Filter, Non-Sterile, High Throughput Lab Filtration, Barreled Packed

I couldn't figure out why my cultures were getting bacteria until I was able to eliminate all other possibilities. Working with a very good laboratory laminar flow cabinet. These filters are junk and I've lost nearly 100 cultures. It pays to buy higher quality filters.

Product came opened. For something that is incredibly important to be sterile, this product was not. It’s upsetting and will now be putting my experiments behind schedule because I need to find filters where the package isn’t spewing open.