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Biomed Solutions GL45 Membrane Screw Cap with 0.2um PTFE Membrane for Gas Exchange,Blue GL45 Screw Venting Cap with Sealing Ring for Lab Media Bottle,2pcs

5.0 (1) Write Review
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$9.99

$ 4 .99 $4.99

In Stock

1.Size:Gl45


  • Cap Material: High Quality Polypropylene(PP) and 0.2 um PTFE membrane.
  • Use for:Sample bottle that uses a standard, GL45 screw cap.
  • Function:The Filter cap can let in oxygen and let out carbon dioxide.
  • Autoclavable maximum temperature up to 140℃, solvent resistance, able to be sterilized and autoclaved.
  • Designed for filtering and storing cell culture media, biological fluids, and other aqueous solutions


The GL45 membrane screw caps can let in oxygen and let out carbon dioxide ,perfect for liquid culture cultivation .


Carlos T.
Reviewed in the United States on May 27, 2024
I idea is good. I ordered them because I thought they would have a novel way to replace the filter. It comes with a paper filter inserted into a 1mm deep and 19.7mm wide hole. This type of paper filter has to be replaced after every use. First Is not a common size, they are available at 20 mm, but I don't have it. I use 25 and 35 mm. Providing the 20 mm fits well only provides 4 mm of seal.I normally do this by drilling a 12 mm hole on the cap and using a 25 mm filter, this leaves a 6mm seal around the hole. Better the 35mm filter leaves 8mm of glue around the hole. My advice for the developer is just to have a flat hole, no recess on top and allow the liberty of using various size of paper filters available.