How long can you store opened but non mixed chemical?

[u2slow]

How long can you store opened but non mixed chemical?

Thank you.

 

[Gerald C Koch]

Can you be a bit more specific. The storage life depends on the chemical.

 

[richard ide]

I think you should be more specific as the stability of a chemical formulation is dependent on many factors. Are you referring to developers or other chemistry? Liquids or powders?

 

[fotch]

5 minutes or longer sometimes.

 

[u2slow]

i am using the ILFORD ILFOSOL 3

 

[bsdunek]

Many manufacturers have this information on their spec. sheets. Go to their web sites and take a look. Freestyle also has links to spec. sheets on many photo chemicals.
It also depends on if the container is full or partially full, as more air means more oxidation. I use marbles to eliminate the air in my one-shot Ilfosol 3 developer.
Finally, as richard ide says - depends on what chemicals and conditions you are talking about.

 

[fotch]

Oh, and Welcome to APUG.

 

[tkamiya]

5 hours 23 minutes and 53 seconds.... give or take .245 seconds with confidence of 93%.

 

[hrst]

If you can displace the air from the bottle, it can be from 6 months to even a year or two. It depends.