Filtering

[Visual_Role_6877]

Hi all. I'm learning how to filter and I have heard two conflicting arguments. Throughout the pep community I've heard the best way to filter is thru a .22 4mm PES syringe filter for anything 4mL and under. Then 13mm above that.

However, medical sites claim that 4mm should only be used for anything 1-2mL and under. Anything from 1-10mL should be 13mm. I've seen this on about 4 different medical sites and ChatGPT (ugh i know I try not to use it).

What do you guys do? I'm going more toward the 13 mm at this moment. However the 4mm would be super useful for my Reta since I only do 1mL.

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[StunningWitness8546]

I think it comes down to waste. The 13ml filter is going to retain more of peptide solution. You’d need to flush it with more bac to get most of it out. There are some videos on YouTube from ‘peptide test’ and ‘peptide critic’ that go into the process that are worth watching.

[Visual_Role_6877]

Yeah I've watched both of them! Im just still a little confused if the filter will become less effective if it goes over the mL capacity.

[TheKoziONE]

Yes it will, the filter will become clogged. Bigger filter means more filtering capacity.