Brew reacting with syringe rubber

[29trt]

brewed some test cyp 250mg/ml and deca 300mg/ml in Mct oil with 20/2 bb/ba all went well
I tried a little experiment and filled two 10ml syringes with about 5ml deca and 5ml test respectively.
left them for 30days and I noticed the plunger rubber on the deca syringe had swelled.
is this a normal outcome? is the oil compromised?

 

[Evom1]

Um... Don't leave syringes filled for 30 days. Draw and shoot

 

[Deleted member 127229]

People do this all of the time and I never understood why. Pure laziness

 

[29trt]

People do this all of the time and I never understood why. Pure laziness

its not about being lazy for me, i sometimes have to travel away from home for a month or more and it is more convenient to carry prefilled slin syringes....
I never noticed this happening on the slin syr. but its hard to see...
after reading somewhere about a brew reacting with rubber stoppers I began to wonder hence the experiment...

 

[Drugsarefun]

It's the Benzyl Alcohol, do another experiment with just BA in a syringe, overnight it'll eat through that rubber stopper.
As your brew is only 2% BA you have a bit of time but 30 days is over kill, I wouldn't leave it any longer than 3.

 

[29trt]

It's the Benzyl Alcohol, do another experiment with just BA in a syringe, overnight it'll eat through that rubber stopper.
As your brew is only 2% BA you have a bit of time but 30 days is over kill, I wouldn't leave it any longer than 3.

ok, right so now we know the BA is the culprit but the original question was what happens to the brew? the color of thr oil has not changed so the rubber is not actually dissolving yet just swollen...
I've read for years about guys pre-filling slin syr.(especially TRT guys) , are they all injecting rubber contaminated gear?

 

[narta]

You cant "see" dissolved rubber, cause it's dissolved.

Traveling with prefilled syringes is far more cumbersome than 2 10ml vials and a bunch of empty syringes, imo.

 

[29trt]

You cant "see" dissolved rubber, cause it's dissolved.

Traveling with prefilled syringes is far more cumbersome than 2 10ml vials and a bunch of empty syringes, imo.

and what about the vials...how am i supposed to keep the oil from touching the rubber stopper?
and yeah its much easier to have prefilled syr. ready to go...

 

[Evom1]

I believe the material the stopper is made out of is different than the plunger

and what about the vials...how am i supposed to keep the oil from touching the rubber stopper?
and yeah its much easier to have prefilled syr. ready to go...

 

[mr.redpill]

and what about the vials...how am i supposed to keep the oil from touching the rubber stopper?
and yeah its much easier to have prefilled syr. ready to go...

By storing them right side up...

A few weeks ago a couple members convinced me to toss about 2 dozen vials that I had stored upside down/laying down for the better part of 18 months.
If you're bored enough to dig through my retarded post history you'll find it lol.

If you're smart, the fear of injecting rubber/plastic into your body should massively supercede whatever doubts you have on that matter.

Toss the syringes.

 

[narta]

and what about the vials...how am i supposed to keep the oil from touching the rubber stopper?
and yeah its much easier to have prefilled syr. ready to go...

Sure one wrong squeeze and the oil leaks, constant contact of the rubber plunger with the solvent leading to dissolved rubber in the oil, etc
Far better indeed

Store vial upright. Plus butyl is not rubber. It's not silicone but it's better than plain rubber

 

[29trt]

Ok why is this info not stickied at the top of the forum..? God damn it people have been keeping gear in syringes and thrown around vials since forever... especially guys that brew their own gear and have vials for an entire year or 2...
thanks for all the info!

 

[narta]

especially guys that brew their own gear and have vials for an entire year or 2...
thanks for all the info!

cause we use silicone stoppers that don't interact that much with the solvents and we are storing brewed vials upright

 

[29trt]

cause we use silicone stoppers that don't interact that much with the solvents and we are storing brewed vials upright

first off all that is a huge misrepresentation of reality.. most no not use silicone as it has its drawbacks as well.... second how sure are you the silicone is not degraded?

 

[narta]

first off all that is a huge misrepresentation of reality.. most no not use silicone as it has its drawbacks as well.... second how sure are you the silicone is not degraded?

What chemical interaction does silicone stoppers have with BA and BB?

 

[29trt]

well

What chemical interaction does silicone stoppers have with BA and BB?

as we do not know the exact type of silicone used in the stoppers its kind of hard to say but if you look online at compatibility charts BA is ussualy ok with silicone but BB is not, and does interact with silicone and ussualy is maked as unsuitable.
Also Silicone in general is quite bad at containing alcohols, BA is no exception

In industry they have to calculate losses if BA is transported through silicone tubing...
My previos question was not ment to insinuate that silicone has any interaction, i was merely asking if you have observed or made any experiments in this regard.

 

[narta]

well
as we do not know the exact type of silicone used in the stoppers its kind of hard to say but if you look online at compatibility charts BA is ussualy ok with silicone but BB is not, and does interact with silicone and ussualy is maked as unsuitable.
Also Silicone in general is quite bad at containing alcohols, BA is no exception

In industry they have to calculate losses if BA is transported through silicone tubing...
My previos question was not ment to insinuate that silicone has any interaction, i was merely asking if you have observed or made any experiments in this regard.

Silicone stoppers have superior self healing to punctures and as I said storing brewed gear upright is the main reason that the solution does not pose any danger of the stopper being dissolved in any significant percentage.

Storing gear in a syringe that comes in direct contact with the plunger 100% of the time is a bad habit

 

[Blitz33]

Dont ever store in syringe more than 10 min, belive me its bad