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We use to buy dry ice up on highway 7 they kept it buried in sawdust, in an old wood and sod ice hut dug into the side of a hill.
 
Trials said:
We use to buy dry ice up on highway 7 they kept it buried in sawdust, in an old wood and sod ice hut dug into the side of a hill.
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Used to buy dynamite for "environmental purposes" as well, but that doesn't mean it's still around in the age of Walmart and regumalations.
 
You could buy firearms and ammunition at the hardware stores too. nice shotgun or reconditioned 303 cost you about 40 bucks lol
 
@Trials I edited it to say Cambridge, but I guess you were too fast LOL

Actually, they were proper firearms, a lot more expensive than $40....they were behind the counter (under lock and key) and you needed to go through the proper rigamarole to purchase one...it was the only CT that I've ever seen carry them...
 
GreyGhost said:
If I put a little freezer inside a bigger freezer inside a bigger freezer doesn't that work? 3 LG freezers sounds cheaper.

I am kidding, that very likely won't work as the inside freezers would need a different refrigerant.

On a more serious note, do they have to be stored at -80 or is that just the cannot exceed temperature? Instead of buying billions of dollars of freezers to be used once and then abandoned, if the temp is shall not exceed, I think it makes a lot more sense to use dry ice (probably not cold enough) or N2 to keep the stuff cold.
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I thought every one in three LG fridges burst into flames thereby negating the threesome to a onesome.
 
Freezing temp of propane is -188°C, it is a very powerful when used as a refrigerant, it is also the main ingredient in the ALL the DIY recharge kits (sold as R12a and different goofy names before people freak out...) we can buy in Canada (CT, PA, etc.). That is just a refrigerant example, lots of other ones..... in comparison R134a is only around -100°C. If you have ever used those propane kits in place of R134a or even real R12....

Designing freezers to the hit those temps is not rocket surgery but it will take some outside the box thinking to do it cheaply.

From what I have read, the temp may not actually need to be that low. They started there as they knew it will work....

Edit.....
pre-coffee....forgot my grade 4 science. Boiling point of propane is -42°C at atmospheric pressure. R12 and R134a are even higher.... So they potentially REALLY need to think outside the box...still lots of XXXXane and other compounds that are well below the required boiling point that can work as a refrigerant.

Obviously this has all been solved as some labs use this type of gear all the time.
 
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Dry ice (solidified CO2) (making use of the heat of evaporation at -78 C in that case) is the common way to do that in the absence of having a stand-alone local refrigeration unit capable of doing that.
 
Speaking of idiots.
There was a Rogers sales rep going door to door in my neighbourhood. It's a pandemic and we are locked down (Toronto), how did anyone think this was a good idea?
 
Brian P said:
Dry ice (solidified CO2) (making use of the heat of evaporation at -78 C in that case) is the common way to do that in the absence of having a stand-alone local refrigeration unit capable of doing that.
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Dry ice will gas off and in an enclosed space a drop in oxygen level causes drowsiness. Just in case someone wants to pick up a shot of vaccine at a takeout.
 
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