Perceptol and wine bladders

[Tony-S]

Just to verify, if I make my Perceptol stock and put it in a wine bladder so there's no air in it, it should last quite a bit longer, no?

[George Collier]

I don't know about wine bladders, but when I was teaching photography at a university in the 70's, I used 5 gallon cubes for dektol and fixer. I bought one with the mix in it, then reused over time with a spigot affair. Worked very well, kept dektol for a few months, and was still fairly light in color at the end. But I don't know about the difference in the poly.
Try one (assuming you mean only a gallon), if it goes dark, you'll know that O2 has crept in.

[pentaxuser]

I'd say the answer should be yes, it will last longer. As long as the winebag is impervious to air leaking in and the developer was pushed to the tap's head so little or no air is trapped in the neck of the tap then as developer gets drawn out the bag collapses because the air pressure outside is greater than inside.

My experience is that wine bags are well worthwhile

pentaxuser

[JCJackson]

I've been using wine bladders for Xtol stock solution, and it has worked very well. More than six months with no perceptible problems. As is said above, you need to get all the air out before sealing the solution in the bladder. Because wine degrades with exposure to oxygen, I think the plastic is designed to be an effective oxygen barrier. I have been using "Black Box" containers, so there's also protection from light. It's also pretty good stuff for box wine...

[Mainecoonmaniac]

I could verify that. I have Xtol and wine bladder for over eight months and it's still fine. The wine bladder I use is a box wine from Trader Joe's which is a double plastic liner.