Do you Refrigerate/Freeze your lyophilized powder?

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steppinthrax

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Simple question,

My quess it it shouldn't matter since it comes in the mail the whole way with no special refigeration.
 
steppinthrax said:
Simple question,

My quess it it shouldn't matter since it comes in the mail the whole way with no special refigeration.
Seems like there could be some logical fallacies associated with your postulation. Try your argument with milk.
 
steppinthrax said:
Simple question,

My quess it it shouldn't matter since it comes in the mail the whole way with no special refigeration.
The warmer it is, the quicker it will break down. It won't become poisonous but it will become less effective over time. There is no way to stop that, but freezer temperatures slow it.
 
stickfigure said:
Freezing at -80C. My stash should be good longer than my lifetime.
at -80 you must be using a ultra low temp freezer. I see them online go for 2 - 4K, of course you have used med equipment from Marketplace. Walmart sells a ultra low fridge that's advertised as going -40 for around 300 bucks but I'm not sure if I trust that.
 
squig33 said:
The warmer it is, the quicker it will break down. It won't become poisonous but it will become less effective over time. There is no way to stop that, but freezer temperatures slow it.

steppinthrax said:
Simple question,

My quess it it shouldn't matter since it comes in the mail the whole way with no special refigeration.
The shipping time is quite short compared to the relative time one would want to store peptides.
 
steppinthrax said:
at -80 you must be using a ultra low temp freezer. I see them online go for 2 - 4K, of course you have used med equipment from Marketplace. Walmart sells a ultra low fridge that's advertised as going -40 for around 300 bucks but I'm not sure if I trust that.
Ali express sells the same freezer for 215 free shipping from US. I just bought one.
 
What is the refrigerant in Chinese copy? Trying to understand how close is it to the original. The control panels are different, but I don't think that itself is an issue
 
stickfigure said:
What is the refrigerant in Chinese copy? Trying to understand how close is it to the original. The control panels are different, but I don't think that itself is an issue
Looks same but in red. Looks like a rebranded version.

https://a.aliexpress.com/_m0ASTVV
 
bbrewer said:
Looks same but in red. Looks like a rebranded version.

https://a.aliexpress.com/_m0ASTVV
Just ordered, I have not received it yet. I will report temps when I do.
 
bbrewer said:
Looks same but in red. Looks like a rebranded version.

https://a.aliexpress.com/_m0ASTVV
That looks like the exact same fridge I saw from Walmart, even the display in the corner is in the same place and same style but the whole thing was in Black
 
stickfigure said:
What is the refrigerant in Chinese copy? Trying to understand how close is it to the original. The control panels are different, but I don't think that itself is an issue
R290 aka propane.
 
Ok, that's different from ULT25NEU, which is R-170 (Ethane). So Chinese version looks similar externally, but different hardware design.
 
stickfigure said:
Ok, that's different from ULT25NEU, which is R-170 (Ethane). So Chinese version looks similar externally, but different hardware design.
The Alibaba freezer above (the red one) only gets down to -40 but does it reliably. I am pretty happy with it overall. I think the ULT25 is -86c but much smaller and much more expensive.
 
Had my order cancelled, vendor never shipped. Full refund but a week wasted waiting. I think the CNY got in the way, but I won't order from them now. Bought one from Amazon, cost more but less hassle. It shiped already.
 
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