Good price on these, usually $22.
These are the good stuff - dense, non-flammable r134a which works much better than the cheap butane ones. Try not to use them willy nilly as the stuff has a global warming potential of 1300ish.
Servisol Air Duster Spray Can 250g $9.95 @ Jaycar (in Store Only)
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Triamble on 26/01/2024 - 16:12 jaycar.com.au (350 clicks)
Last edited 26/01/2024 - 16:43 by 1 other user
Last edited 26/01/2024 - 16:43 by 1 other user
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It shouldn't be called an "air duster" if it doesn't contain air.
Or dust…
Just buy an electric blower and have infinite usage
Any recommedations for something that doesn't suck and isn't pricey? I tried a $30 one off Amazon that had 4 stars (https://www.amazon.com.au/gp/product/B0BLHF54M9, currently $45) and honestly I'd be better off farting through a straw to clean dust away from computer innards rather than using this this.
Buy the original Opolar when it goes on sale.
I’ve got the newer vacuum one too but it’s bigger and not noticeably better.I’ve seen others post similar knock offs for under $30 but I cannot comment on those
TIL you can buy cans of R134A and use them for what you will. And that they are used in airsoft as propellant. I thought we had stopped putting green house gases casually into the air. Bloody hell.
Really surprised they aren’t just compressed air.
It'd be really difficult to do with compressed air. Butane is used because it turns into a liquid at only ~2 atmospheres of pressure, and about 3 atmospheres for R134A.
Because it's liquid in the cans, it turns into a much larger volume of gas as it leaves the can.
Air cannot be liquified the same way, pressure alone won't liquify air. Air can only be liquified by cryogenic refrigeration. So to achieve the same amount of gas produced, the can filled with air would have to be pressurised at a dramatically higher pressure, and it'd be like a sodastream cylinder. And like a sodastream cylinder, it would also be heavier and more expensive than the "duster" cans we see.
Yeh it makes sense… just not something i had thought about previously.
I prefer the Laser Air Duster which has a trigger and straw nozzle. It's been $9.95 forever but has a limit of one per order.
The propellant is R-152a (difluoroethane) which is less bad than R-134a but still not great.400ml Laser is also available at HN and OW.
Even this is $8, 280g, comes with straw too and "ozone friendly"… whatever that means.
https://www.kmart.com.au/product/aerosol-air-duster-spray-43…$9.95 for 250g seems like a lot to me
The cheap ones are just butane. The HFC gases are much heavier so deliver more pushing power. And butane should not be used on live electronics as it's extremely flammable. The cheapies are fine for some things, but not all
Thanks for clarifying, useful to know about HFC vs Butane.
Any advantages you can see to Servisol over Laser?
Right now I only see 400ml > 250g and based on Cheap Gamer's comment 152a is slightly less environmentally damaging than 134a in Servisol.
How do you know it's R134A? Just curious.
On the Jaycar page there is a link to the MDS which states it Tetrafluroethane 60% down the rabbit hole to :
https://en.wikipedia.org/wiki/1,1,1,2-Tetrafluoroethane
Quite interesting as I would of expected it to be compressed air.I would of expected it to be compressed air.
They want you to think that, so you don't have any qualms about using it.
If you knew what it was, you might consider buying an electric duster or a small compressor.
I doubt it's an accident they call it an "air duster", I reckon it's greenwashing.
Need to regas my car, cheers