Does filtering work? Yep, lab tested....

[remwar]

I have some reta to would that destroy it with the filter being so tiny? If no, would it remove endo? #oldguy

[Snake Pepskin]

I just placed an order here, not sure how long it will take yet. I’ll keep you updated. But they have free shipping. I’ve ordered from them before, not medical related and they shipped quickly.

https://www.zoro.com/globe-scientific-syringe-filter-13-mm-dia-10-ml-pk50-sf-pes-1013-s/i/G903673742/

[Blueeyedme]

@vpeptides - correct. 0.22 µm (220 nanometers) is the standard pore size used for laboratory sterile filtration. Anything else is overkill from a sterility standpoint.

[LexLen]

So we know it "passed" the sterility at 0.10. Now we would need to see if it would pass sterility at 0.22. If so, then we would need to test each size for purity to see if the pep made it through?

[pep_researcher]

@OldGuy said:

@damic Amazon. The part number is visible in the Vanguard test results.

Which exactly on Amazon. There are many with same printing on backside of filter pack.

Mind sharing the link?

[mary]

@Blueeyedme
Maybe not if the rat's bbb is not intact.

[karinperry]

@JtCjEfF Great article!

[flyhigh]

@diannemccann Yes specifically these are designed for sterility and endotoxins and are the best way for a single vial peptide purchaser to deal with S&E if all they have is IPN on a peptide. Cytiva (PALL) 4908-N Acrodisc Syringe Filters Optimized for Scale Up, Posidyne membrane, sterile, 0.2 µm 25mm. .22 is the standard not .1

[Stevepep]

@flyhigh endotoxins are cell walls these filters are not going to be successful filtering out tiny molecules like that. Bacteria and other contaminants yes but endotoxins are too small

[flyhigh]

its the positive charge that filters the endotoxins, how high a level not sure yet. But they are specifically designed for filtering endotoxins