I know that the Peptide Test ones are PES Syringe Filter .22um 4mm but are back ordered right now so I am going to order and try these sold on walmart but actually coming from Biomed Scientific
Sterile Syringe Filter PES Membrane 13mm Disc Diameter 0.22μm
I know they are 13mm so there will be more product left in the filter when done than the 4mm ones but I have been unable to find any 4mm sterile ones except Peptide Test.
Here are some other ones on Amazon but also being sold by Biomed Scientific but they are 25mm so even more waste.
Sterile Syringe Filters PES 25 mm Diameter 0.22 um Pore Size Individually Packaged 10/pk by Biomed Scientific
As said above even though these are being sold on Amazon or Walmart it looks like they are coming from Biomed Scientific...
Sterile Syringe Filter PES Membrane 13mm Disc Diameter 0.22μm
I know they are 13mm so there will be more product left in the filter when done than the 4mm ones but I have been unable to find any 4mm sterile ones except Peptide Test.
Here are some other ones on Amazon but also being sold by Biomed Scientific but they are 25mm so even more waste.
Sterile Syringe Filters PES 25 mm Diameter 0.22 um Pore Size Individually Packaged 10/pk by Biomed Scientific
As said above even though these are being sold on Amazon or Walmart it looks like they are coming from Biomed Scientific...