I really think filtering will be the new norm for me. PepTest shows step by step and for just a few bucks your atleast a little safer. We all know what we are working with but we can pit up some safe guards. Good point @Chizikitide-1977Yes, for sure. I'd still recommend filters to the people here who bought from them. But I'm getting the impression from what I've read that this is a new company that is trying to improve.The picture looked a bit bleaker to me when the only public test I could find indicated major problems.
Filters from Tisch are on backorder for 3 weeks when I ordered. The 13mm is available now but you do have a tad more loss with 13mm of the residual peptide per PepTest
4mm loss .07ml
13mm loss .28ml
33mm loss .65ml
He has a wonderful discord just on testing.