dcfreak
Member
I thought as long as it is kept in the dark and climate was controlled we could get 3-5 years as long as oil stayed clear? No? We should freeze long term?
MESO-Rx
Anabolic Steroids
Qingdao Sigma Chemical Co., Ltd (International, US, EU, Canada and Australia domestic
- Thread starter Qingdao Sigma Chemicals
- Start date
R
readalot
Guest
AAA oils? I'll be in the fridge. Oil off stoppers.
Kralteramon
Member
I had oils from QSC go bad in less than 2 years. Confirmed by QSC. If the oils contain eo I've heard it's 2 years as well. Also you don't know in a lot of cases when product was produced. Might be older than you think.
Kralteramon
Member
For how long you think it extends shelf life?
R
readalot
Guest
Using arrhenius activation energy argument, at least 5 to 10 years if starting with high quality carrier oils with low peroxide value.
Kralteramon
Member
What if there would be eo in there?
R
readalot
Guest
I'd have to think on that one. Rancidity activation energy about 50 kJ/mol for many oils. That was what I was basing my range on.
Kralteramon
Member
Appreciate it.
Ghoul
Member
Whatever the rate of degradation is, and there are too many unknowns with UGL to know for sure, at room temp degradation is 2x as fast as refrigerated, and 10x faster than frozen.
Several people have reported substantially increased pip with older QSC oils. Not a good sign for long term stability.
Several people have reported substantially increased pip with older QSC oils. Not a good sign for long term stability.
R
readalot
Guest
Using Q10 factor of 2** (reaction rate doubles for every 10 deg C), then going from 22 deg C (room temp) to 2 deg C (fridge temp) reduces degradation rate by factor of 4.
** only strictly accurate for activation energy = 50 kJ/mol. Rough math.
** only strictly accurate for activation energy = 50 kJ/mol. Rough math.
dcfreak
Member
Sounds like a whole other rabbit hole to go down. Guess I need to figure out a better option than my closet for the surplus kits of test
Kralteramon
Member
This is golden. Thanks Readalot.Using Q10 factor of 2** (reaction rate doubles for every 10 deg C), then going from 22 deg C (room temp) to 2 deg C (fridge temp) reduces degradation rate by factor of 4.
** only strictly accurate for activation energy = 50 kJ/mol. Rough math.
Ghoul
Member
Using Q10 factor of 2** (reaction rate doubles for every 10 deg C), then going from 22 deg C (room temp) to 2 deg C (fridge temp) reduces degradation rate by factor of 4.
** only strictly accurate for activation energy = 50 kJ/mol. Rough math.
Pharma stability studies use 25c for room and 2-8c (4c nominal) for refrigerator temps, fyi.
R
readalot
Guest
Thanks. Nominal 21 deg C temp difference. Same answer. Factor of 4.
R
readalot
Guest
30 vs 50 vs 70 kJ/molUsing Q10 factor of 2** (reaction rate doubles for every 10 deg C), then going from 22 deg C (room temp) to 2 deg C (fridge temp) reduces degradation rate by factor of 4.
** only strictly accurate for activation energy = 50 kJ/mol. Rough math.
2.5x, 4.6x, 8.5x
For 4 deg C to 25 deg C
The rule of 2 is just simple rule of thumb. I will spare the details.
Thermal Degradation of Vegetable Oils - PMC
Vegetable oils provide lipids and nutrition and provide foods with a desirable flavor, color, and crispy texture when used to prepare fried foods. However, the oil quality is degraded at elevated temperatures, and thus must be examined frequently ...
pmc.ncbi.nlm.nih.gov
This ref indicates Ea closer to 30 kJ/mol but this is high temp regime. That would result in 2.5x (closer to @Ghoul estimate). IIRC room temp rancidification closer to 50 kJ/mol.
Play at home.
Accelerated Aging Calculator - Shelf Life Prediction Tool
Free Accelerated Aging Calculator using the Arrhenius equation. Predict shelf life for medical, pharma & materials in seconds. Try it now!
calculatorprotool.com
Alias Chosen
Member
To be fair, they need to make sure every unsettled order gets paid back in full or replaced with a fresh batch. Do that, and they’ll be back on top in no time. Everyone knows there’s risk in this game, but if you want to keep your reputation, you’ve got to make things right. I’m still a bit optimistic Tracy will make it right. I’ve never had a bad run with them personally. From what I’ve seen, he’s fixed a few things in the past, aside from some bad stories here and there. Guess time will tell.
Ghoul
Member
Sell gear cheap enough and they'll be back on top whether any of the shorted customers get paid or not.
Thats's the brutal reality.
In fact, if QSC sells gear really cheap anyone mentioning getting ripped off will be told by the dick riders to STFU it's been a long time, stop whining, it's your fault for being poor, etc etc
Last edited:
Alias Chosen
Member
I got another source doing 135 with shipping for one vial. But 85 a vial isn’t QSC standard, and they can’t claim best prices in the game at that rate. No way I’m dropping 850 on a kit, even if it gave me the best gains of my life. He also went up 10 of hgh, a few other peptides, and aas tablets. He’s just milking it now with low stock.
halan1
Member
Other EU source promo Primobolan AsteraLabs 100mg/ml at 62€ + 1 other product(test 250 or Oral) , but it seems they ship only to a few countries in UE
I asked them about when test c raws would be back in stock. They told me probably not anytime soon. I doubt he will
Similar threads
