MESO-Rx Sponsor Primal Pharma - US Domestic

[Ghoul]

I need all my vials replaced my fear has been mongered I’ve been blowing spit bubbles and hissing at people all morning

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

 

[Photon]

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

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'

Oct 27, 2025

Read here.

These were exclusively used based on Primal's post except for the short silicone run.

The stoppers aren't even the same.
Mix and match?

Anyone received anything recently?
Share some stopper pics please.







Halloween sale incoming!!

Spoiler: Links

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

• Photon

• 

 

[BigDadd7]

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.

 

[Matty_G]

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

 

[Bandern]

View attachment 357308Shill, you have breached containment. Return to the quarantine zone. Do not resist.

I’m naked and covered in rubber stopper infused tren grease!! Catch me if you can!!

 

[maddie]

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?

 

[Photon]

Is it PVDF or PES that we use to filter oils?

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.

 

[readalot]

https://peptidetest.com/products/ti...5mm-sterile-individually-wrapped-exp-09-30-26

PTFE <---- oil
PP housing

 

[Matty_G]

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.

Ah so I would have got the wrong ones. Need PTFE

 

[SwolieGuacamole]

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'

Oct 27, 2025

Read here.

These were exclusively used based on Primal's post except for the short silicone run.

The stoppers aren't even the same.
Mix and match?

Anyone received anything recently?
Share some stopper pics please.







Halloween sale incoming!!

Spoiler: Links

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

• Photon

• 

I 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?

 

[Dial It In]

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

Tisch scientific PTFE syringe filter. .22 sterile individually wrapped.

Tisch Scientific Filter Syringe .22μm PTFE 25mm - Sterile Individually

Tisch Scientific Filter Syringe 22μm Ptfe 25mm – Peptide Test Lab Supplies - Fast, accurate, and trusted.

peptidetest.com

BD 10ml (Premium) Syringes (luer lock)

General Purpose Syringe Luer-Lok™ 10 mL Blister Pack Luer Lock Tip Without Safety The Luer-Lok™ Syringe 10 mL Blister Pack is designed for precision and safety. This syringe features a Luer lock tip without safety, ensuring a secure connection every time. It's perfect for various lab...

peptidetest.com

Thread 'Filtering finished oils'

Jan 5, 2025

I see a lot of great posting lately on filtering finished oils. Decided to make a thread to hopefully consolidate all the great info in one spot.

My knowledge is somewhat amateur on this topic, but what I know so far is that for the average user buying 10ml UGL finished oils a PTFE 0.22 13mm Is likely the best choice.

If you have good info on filter types, brands, techniques, etc. I want to know!

• UncleBuns

• 

 

[Ghoul]

Ah so I would have got the wrong ones. Need PTFE

Yeah FDA rules for compounding pharmacies say Hydrophobic PTFE.

 

[Photon]

I have no clue here, but maybe just a generic picture.

You could email them but I'm not gonna get involved any further lol.
Either way there's a few and they're all bloating up.

 

[maddie]

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....

 

[Ghoul]

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....

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.

 

[maddie]

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.

Definitely. Cobetter showing a 25mm filter for about $1.15 each is not a bad harm reduction investment.

 

[Anonymous member 154437]

I 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?

med lab just has the wrong picture you get two rings on the stoppers

 

[Bandern]

Peeker. No worries, you ain't the first. Hard to do.

How many forums you think you’ve been banned from or chased off between me and the first?

 

[Photon]

I have no clue here, but maybe just a generic picture.

Every stopper I’ve seen posted, mine included, all have the double rings.

I used to use vials from Ks-Tek before i upgraded.

The stoppers look like the ones in the MedLabSupply url (not double rings).
They have quite a few different stopper designs too besides double rings, lines etc. They sell on Amazon and you can find user uploaded pictures there if you want.

The stoppers were kinda crap tho they claim to be PTFE coated.

 

[Yolkedeggwhites]

IIRC, DHB hasn’t had an ETA in a long while.

Dang, okay. Was hoping to get some. Seems harder to come by now.