Using CO2 to prevent oxidation

[Dave Krueger]

The true purist will use methane. Some believe that is the real derivation of the term "analog photography".
Just remember to hold the bottle at arm's length when re-opening the bottle.

So... I'll just fart in the jar before I close it.

 

[Dave Krueger]

So... Has anyone considered using Dust-Off? From what I gather, it contains freon, which is not flammable.

 

[Ole]

So... Has anyone considered using Dust-Off? From what I gather, it contains freon, which is not flammable.

Freon in spray cans has been banned since the late 1970's. I bet Dust-Off is largely butane, just like everything else!

 

[Photo Engineer]

My bottle here says "contains 1,1,1,2-tetrafluoroethane. Not flammable, but not very good for you either.

I prefer Nitrogen.

PE

 

[Neal]

Dear Dave,

If your chemicals are dying due to oxidation rather than exhaustion, you are not making enough photographs. ;>)

Neal Wydra

 

[Dave Krueger]

Dear Dave,

If your chemicals are dying due to oxidation rather than exhaustion, you are not making enough photographs. ;>)

Neal Wydra

I can't argue with that. I hope to do more after I retire. Unfortunately, because of my spending habits, my calculations show that I will need to remain employed for another 73 years and 2 months.

 

[Kirk Keyes]

My bottle here says "contains 1,1,1,2-tetrafluoroethane. Not flammable, but not very good for you either.

I prefer Nitrogen.

PE

PE - as far as not being very good for you, 1,1,1,2-tetrafluoroethane, also known as REFRIGERANT 134A, should have about the same health issues as nitrogen. Death by suffocation is the biggest concern for each of them, as they are both asphyxiants at high concentration.

While 1,1,1,2-tetrafluoroethane is not a freon, as freons are chlorofluorocarbons and there is no chlorine in it, it is very similar. It is fairly unreactive - perhaps behaving more like a gaseous teflon, if there was such a thing...

I have used Dust Off, and Beselar used to make a product called Xtend-All or something like that which was a freon. They work well. Just make sure you have bottles that are resistant to gas permeation.

I also have a nitrogen tank now. I use it for topping off bottles, and for purging the Jobo tank when processing with pyro-based developers.

 

[jim appleyard]

So... I'll just fart in the jar before I close it.

"Can we have more beans Mr. Taggart?"

What happens if you let a real ripper go and spray PMK all over yourself? Not very healthy. However, you do have a renewable resource.

 

[Reinhold]

Here you go...

http://www.pump-n-seal.com/index.html

Works on almost any kind of container.
Should make my Glycin powder live a bit longer.

Reinhold

www.classicbwphoto.com

 

[Dave Krueger]

Here you go...

http://www.pump-n-seal.com/index.html

Now that is pretty cool. Can't beat the price, either.

 

[waynecrider]

I use a nitrogen tank, but then I've had it for my business. Refills are much less expensive. A less initial cash output way to go is to visit your local wine merchant where they sell small bottles (kits) of the stuff for opened wine. Make sure it's nitrogen since I believe some are mixtures, but then I'm old and can't remember everything.

 

[Fotohuis]

http://www.vacuvin.nl/wining_winesaverrvs_geb.html

Including instruction video on the web site.
Headquarters in Delft, the Netherlands, so we made the X-Mas deal :rolleyes: