Reading from this it looks like PTFE is the safest. Biomed has some on amazon. I would purchase PTFE over nylon or PVDF.
Membrane Filter Chemical Compatibility Chart
MESO-Rx
Anabolic Steroids
Qingdao Sigma Chemical Co., Ltd (International, US, EU, Canada and Australia domestic
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Reading from this it looks like PTFE is the safest. Biomed has some on amazon. I would purchase PTFE over nylon or PVDF.
Membrane Filter Chemical Compatibility Chart
clearheaded
Member
2 theories, china has 7 years left before collapse, or they continue buying up worlds resources while we buy endless cheap garbage from them in exchange.
plz stop
I love the idea of vial adapters but I haven't had a good experience with the Clave needless access ones.
I suspect the material was incompatible with the solvents in my oils from QSC and was reacting ever so slowly causing the plastic internal tip to weaken and snap (throwing plastic shards into my vials). You can read more here.
Don't know about the BD ones but I'm not willing to experiment further.
I believe ptfe and pvdf one reacts to alcohol or something. There was a compound chart is terms of use and oils/waters/solvents and heat. I believe PTFE degrades very easy with BA or BB. PVDF i remember you may have to run oil through first.
I know nylon was best for all and heat.
My reasearch in past showed PTFE to no be compatable with my needs. PVDF and NYLON actually were much better. Its been 1 year since doing and looking into so.
Lmk if you can find that chart or if anybody else has it.
The link i posted earlier was the best compatibility chart I found so far with both BA and BB present compared against PVDF, Teflon, Nylon and PES.
According to that it does say PTFE and Nylon are compatible with both BA and BB but does not mention temperature and/or any other factor.
It's a good idea to clarify this, I just made a thread on the homebrew section on this too.
Did you conjure this information from your crystal ball or you're CIA, I seriously wanna know.
Punisher95
Member
Send them an email they should break it down for you
Syringe Filters Solvent Compatibility Chart
For the guys not sure of which filters to use with certain chemicals.
For the guys not sure of which filters to use with certain chemicals.
connoristiny
New Member
well I cant even use his bold cyp bc it keeps crashing on me
Get rid of it, price of the game. Find another supplier.
The old filter options were PES and PVDF. PES was not chemically compatible with BA. So most people paid more money for PVDF.
PTFE looks like a fine choice. I think both should be fine. PVDF is perfectly compatible with BA below 50C but experiences 2-5% degradation when exposed to 100% BA above 100C for (I think?) 1000 hours making it “sorta mostly compatible YMMV” in industrial settings. We have 2% BA at 80C for at most one hour, so it should be fine.
But I don’t see any disadvantages of PTFE unless you really super hate PFAS/PFOS and are worried that Teflon will leech that out under chemical/heat/mechanical stress.
This doesn’t say 1000 hours but that’s usually the time frame for chemical compatibility tests.
Please note this is a much more detailed compatibility sheet for PVDF specifically than the other ones which have been posted, but does not show PTFE comparison.
PTFE looks like a fine choice. I think both should be fine. PVDF is perfectly compatible with BA below 50C but experiences 2-5% degradation when exposed to 100% BA above 100C for (I think?) 1000 hours making it “sorta mostly compatible YMMV” in industrial settings. We have 2% BA at 80C for at most one hour, so it should be fine.
But I don’t see any disadvantages of PTFE unless you really super hate PFAS/PFOS and are worried that Teflon will leech that out under chemical/heat/mechanical stress.
This doesn’t say 1000 hours but that’s usually the time frame for chemical compatibility tests.
Please note this is a much more detailed compatibility sheet for PVDF specifically than the other ones which have been posted, but does not show PTFE comparison.
clearheaded
Member
@DECLAN
you've never heard economists talk about this? not going to pretend im an economist but these are 2 theories by those smarter than me.
quick goog for you guys... Five reasons why China's economy is in trouble
sorry it was 10 years not 7....
'10 years left': This famed geopolitical analyst says China will collapse in the next decade — here are 3 key numbers that could support his shocking forecast
But is China really that fragile?
not just going away since drop covid zero either.
many experts also feel in order to beat china, the west would need to become more like china..
glad I was able to shed some light on what's happening in the world for the bros!
anyway, think I was simply commenting on folks who wanted a "just in case" stash....no need to derail the thread
Zoidberg
Member
Request to restock the CJC-1295 3mg / Ipamoralin 3mg blend.
bloke
Member
Anyone has a source for this? Would like to give it a try. All the places I found on google won't ship (to US) unless I upload some license or they want me to buy a pallet of them. I found one but it doesn't fit the standard 10ml vial and it's a different brand. I will keep looking...
Qingdao Sigma Chemicals
Subscriber
Discontinued.
XXYBlastnCruise
New Member
Had these done, forgot to post them. I was initially skeptical of the quality due to the prices, but was surprisingly pleased with the results. Wont go anywhere else now. 
