Shelf life of raws

[Sk8man101]

Hey I know there was another thread like this but I couldn't find it.

What's the shelf life of your raws?
How can you extended that shelf life?
Freezer?
Cool dry place?
Brew it?

 

[Docd187123]

You want somewhere that’s moisture free and out of direct light if possible. Only time I use a freezer is if the raws melted like happens with test e sometimes.

 

[Dr JIM]

I can only tell you what the recommendation is from one US certified AAS analytical standard
manufacturer.

If possible reconstitution should be delayed until the day of testing.

Otherwise the product/s should remain in a their respective vials in a refrigerator OR freezer . The latter is preferred if use is delayed more than 30 days.

For optimal reproducibility the a shelf life of SEVEN days may be anticipated for a refrigerated reconstituted product, while
180 days is a reasonable estimate for a frozen unreconstitued product.

However the purchasing lab should perform HPLC, LS/MS standardization testing to establish that labs quantitative baseline.

The latter SHOULD then be used for comparison to determine the effects of storage related oxidation over time, and whether the products continue to qualify for that research being conducted

The latter is at the discretion
of each .

Understand these guys manufacture AAS STANDARDS,
so the purity is of utmost imoirstabce, so the objective is somewhat different.

Finally I can tell you most Pharma lists a shelf life of somewhere bt 6-12 mos, which decreases to around 30-60 days once the vials is punctured.

The latter is based upon sterility rather than quantitative concerns.

Jim

 

[Wunderpus]

I can only tell you what the recommendation is from one US certified AAS analytical standard
manufacturer.

If possible reconstitution should be delayed until the day of testing.

Otherwise the product/s should remain in a their respective vials in a refrigerator OR freezer . The latter is preferred if use is delayed more than 30 days.

For optimal reproducibility the a shelf life of SEVEN days may be anticipated for a refrigerated reconstituted product, while
180 days is a reasonable estimate for a frozen unreconstitued product.

However the purchasing lab should perform HPLC, LS/MS standardization testing to establish that labs quantitative baseline.

The latter SHOULD then be used for comparison to determine the effects of storage related oxidation over time, and whether the products continue to qualify for that research being conducted

The latter is at the discretion
of each .

Understand these guys manufacture AAS STANDARDS,
so the purity is of utmost imoirstabce, so the objective is somewhat different.

Finally I can tell you most Pharma lists a shelf life of somewhere bt 6-12 mos, which decreases to around 30-60 days once the vials is punctured.

The latter is based upon sterility rather than quantitative concerns.

Jim

Jim, this is helpful for finished products... The OP was asking about unfinished, raw products (i.e. test enanthate powder)....

 

[Dr JIM]

Jim, this is helpful for finished products... The OP was asking about unfinished, raw products (i.e. test enanthate powder)....

And the primary difference bt the
standards I just described and raws bought elsewhere is their overall purity, bc when a an analytical standard is purchased it arrives in a “raw” powdered form.

At least that’s what I’m referring to in this post bc some standards
can also be purchased as “HPLC, LC/MS ready” products. In the latter case the product is often solubilized in a mixture of ACN and pure water.

 

[Sk8man101]

And the primary difference bt the
standards I just described and raws bought elsewhere is their overall purity, bc when a an analytical standard is purchased it arrives in a “raw” powdered form.

At least that’s what I’m referring to in this post bc some standards
can also be purchased as “HPLC, LC/MS ready” products. In the latter case the product is often solubilized in a mixture of ACN and pure water.

I feel like the medical world's perspective on how long drugs will last before they expire isn't really applicable to what we are doing.

Example: Say after the first year potancy drops off by 10% and by year 5 they drop off 20%.
To me those raws would still be good. But by pharmaceutical standards I should have trashed them years ago.

 

[Dr JIM]

And that’s why I cited the shelf life of Pharma products bc that’s
likely a more reliable estimate
of UGL AAS.

But the only way to KNOW if the shelf life of UGL products is
different than Pharma is evidence based studies and THATS
the major difference bt what brewers are doing and the medical community.

Finally a STANDARD that is “off” by 10-20% is a HUGE difference and should be discarded

 

[Dr JIM]

Pharma no doubt has a vested interest in underestimating the shelf life of their products,

However when the product can only be administered parenterally
infectious concerns complicate matters.

The latter invariably reduces the shelf life of any product.

Of course AAS are somewhat different bc the presence of preservatives and oil based solvents limit bacterial reproduction.

 

[Dr JIM]

The latter is very important to remember since some “injectable orals” are listed as being solubilized in WATER.

 

[rutman]

It may be better to go ahead and mix everything up into a large mason jar, unfiltered, and just filter out what is needed during a 3 month period, for example. Store the jar in a cool place. Should last for many years that way. Raws tend to not do well with temperature/humidity changes. At least that’s been the experience of the people I know.

 

[Genghis K.]

Exceptions to almost every rule, BUT moisture is typically your biggest enemy when it comes to any sort of storage.

 

[rutman]

Exceptions to almost every rule, BUT moisture is typically your biggest enemy when it comes to any sort of storage.

True... that’s why I’d go ahead and mix everything up in a mason jar. Moisture should not be a factor stored that way.