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I need all my vials replaced my fear has been mongered I’ve been blowing spit bubbles and hissing at people all morning
Not stirring shit-
Just contributing something that might be helpful
I noticed that the stopper on my Cyp 200 gso that was bulging does not look like the stopper pictured in the link from the quoted post. It has 2 raised rings
View attachment 357306



Shit stirring is simultaneously annoying and useful. Rather than avoid it, I simply hold my nose and check for corn.Not stirring shit-
Just contributing something that might be helpful
I noticed that the stopper on my Cyp 200 gso that was bulging does not look like the stopper pictured in the link from the quoted post. It has 2 raised rings
View attachment 357306
shop.cobetter.com
I’m naked and covered in rubber stopper infused tren grease!! Catch me if you can!!View attachment 357308Shill, you have breached containment. Return to the quarantine zone. Do not resist.
Is it PVDF or PES that we use to filter oils?When you pop the stopper off, give it a good sniff.
Liberated butyl rubber oligomers smell Iike a brand-new inflatable pool toy, rubber garden hose, that strong “new plastic-rubber” smell, then add a faint hint of antiseptic medicine cabinet, like Band-Aid.
By the way, it’s not the BA or BB that’s responsible for leaching this out of raw bromobutyl and chlorobutyl, it’s oil.
Raw rubber stoppers are Type I, suitable for water based injectable drugs, oil based injectables are supposed to use Type II, either coated or special formulations designed not to release oligomers.
“Under the accelerated extraction conditions, extractables from oil-based vehicle tests were appreciably higher than those from aqueous vehicles.”
![]()
Comprehensive Determination of Extractables from Five Different Brands of Stoppers Used for Injectable Products
Five commonly used stopper formulations were tested for extractables using three different vehicles (pH 3 citrate buffer with 20% w/v sulfobutylether-β-cyclodextrin, pH 8 phosphate buffer and 50/50 v/v polyoxyethylated castor oil/dehydrated alcohol). The stoppers, made from butyl and halobutyl...journal.pda.org
Is it PVDF or PES that we use to filter oils?
Ah so I would have got the wrong ones. Need PTFEPTFE for oils.
PVDF/PES for peptides.
If you order from Cobetter and its not from the US warehouse you get slapped with a 50usd tax at customs.
An assortment of stoppers seem to be in play and they don't match the ones mentioned on the medlabsupply website.
Hopefully any bloated vials are tossed out and not just swapped with new crimps and stoppers.
MESO-Rx Sponsor Post in thread 'Primal Pharma - US Domestic'
The stoppers aren't even the same.
Mix and match?
Anyone received anything recently?
Share some stopper pics please.
Halloween sale incoming!!
www.medical-and-lab-supplies.com/products/20mm-butyl-rubber-stoppers-for-vials-gray
thinksteroids.com/community/threads/primal-pharma-us-domestic.134430762/post-3623418
thinksteroids.com/community/threads/primal-pharma-us-domestic.134430762/post-3624298
Tisch scientific PTFE syringe filter. .22 sterile individually wrapped.Most of my stash is from primal. I’ll check them all when I get home.
As for the syringe filters, going to place an order for these unless someone has a better option.
![]()
Sterile 0.2 μm Hydrophilic PVDF Syringe Filters
Hydrophilic PVDF syringe filters with single or double-layer membrane. Pore sizes of 0.2μm. Diameter of 13mm/25mm/33mm with Luer lock. Sterile individually packed. Used for clarifying filtration of biological samples and protein solutions.shop.cobetter.com
peptidetest.com
peptidetest.com
Yeah FDA rules for compounding pharmacies say Hydrophobic PTFE.Ah so I would have got the wrong ones. Need PTFE
I have no clue here, but maybe just a generic picture.
Thank you! I have PES from cobetter, now I need to order some for oils. I've always been told if you have to filter your domestic oils, then its time to find a better source. All this stopper talk is making me rethink....PTFE for oils.
PVDF/PES for peptides.
If you order from Cobetter and its not from the US warehouse you get slapped with a 50usd tax at customs.
Thank you! I have PES from cobetter, now I need to order some for oils. I've always been told if you have to filter your domestic oils, then its time to find a better source. All this stopper talk is making me rethink....
Definitely. Cobetter showing a 25mm filter for about $1.15 each is not a bad harm reduction investment.Knuckle draggers dressing up carelessness as virtue.
Things can go wrong with any source, no matter how careful they are, they don’t have Pharma level safeguards in place. Even pharma has disasters on a regular basis. This reduces risk under all circumstances.
med lab just has the wrong picture you get two rings on the stoppersI have no clue here, but maybe just a generic picture.
Every stopper I’ve seen posted, mine included, all have the double rings.
Does anyone here have vials with the actual stoppers pictured?
How many forums you think you’ve been banned from or chased off between me and the first?![]()
Peeker. No worries, you ain't the first. Hard to do.
I have no clue here, but maybe just a generic picture.
Every stopper I’ve seen posted, mine included, all have the double rings.
