[ 3 / biz / cgl / ck / diy / fa / ic / jp / lit / sci / vr / vt ] [ index / top / reports ] [ become a patron ] [ status ]
2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math

View post   
File: 252 KB, 900x1200, thumb_ingr2022_0001_venere_white_1648046151.jpg [View same] [iqdb] [saucenao] [google]
15249782 No.15249782 [Reply] [Original]

I don't know if this is a /sci/ question, but I'm asking it in a biotech context
Does anyone know if there are glass door freezers that can keep their contents really, really fucking cold? Like at least -40 but maybe even -70
I want to use it in our work lab so we can see samples inside of the freezer when we're actively using them without having to open the door

>> No.15249827

Why not just stick a cheap raspberry Pi camera in there?

Depending on how /diy/ you want to get, you could even put a little motorized pulley system so it can take photos of each shelf every hour or what ever. Then automatically upload the photos to a separate server to make a stop animation video.

I know this isn't what OP is asking for, especially since they're willing to spend a small fortune on -70 degree fridge with windows on the whimsical advance of 4chan anons, but I just can't help but think of the cheapest solution to every problem I see.

>> No.15249830

>>15249782
Good luck, if you don't have too many samples, perhaps a dewar system will work?

A ceramic or see-through dewar makes more sense to me than a whole freezer that can get that cold.

>> No.15250940

>>15249782
>glass door
>-40
No.

>> No.15251613

>>15249782
You could make your own. If you don't know how, ask a window builder or company to make your design. Would need double vacuum zones and panes of really thick glass. Might still frost up between them.

>> No.15252503

>>15251613
>Might still frost up between them.
Would that be possible in a true vacuum?

>> No.15252518

>>15249782
There might be some but easier to get one custom made at that point. Also "seeing the samples" is pretty much useless in a freezer, what exactly are you expecting to see? Biological samples will all be frozen solid and pretty much unchanging, especially visually.

>> No.15253010

>>15249782
>glass
why not use PET, brainiac?

>> No.15253076

>>15253010
Sell me on it

>> No.15253100
File: 142 KB, 667x1000, 1636837234477.jpg [View same] [iqdb] [saucenao] [google]
15253100

>>15253076
>durable, hard and rigid
>doesn't shatter into a million sharp pieces
>cheap
>transparent
>withstands -70 Celsius as well as 150 Celsius above zero
>hygienic and resistant to bacteria and such
>very light weight
>electrical insulation
>low permeability (doesn't let gas seep through)
>good resistance to alcohols and diluted acids, moderate resistance to diluted alkalis
Take the petroleum product pill

>> No.15253121

>>15253100
haha, cheers

>> No.15254599

A B C D E F G H I J K L M N O P . . . . . . .

>> No.15254617

how many years will we need to wait for aerogel as transparent as glass, and if it's cheaper than regular home insulation, people start building uninsulated homes in giant aerogel greenhouses?

>> No.15256423

>>15254617
Can Aerogel keep stuff cold? Is it cheaper than dry ice?