Chemical Questions

[mhainz]

I have just been given a bottle of Ilfospeed paper developer. Still with the original seal intact but fairly old. I haven't been able to find much info on this and was wondering if it's any good. Till now I have just been using Ilford multigrade developer.

 

[Ole]

I'm using seven years old multigrade developer today - opened the bottle half an hour ago. Still good. Just try it

 

[Jorge Oliveira]

Quick test:

Take a small piece of photo paper. Place a drop of developer (as recommended by the manufacturer - dillution, etc) in it.
Expose to light.
If it turns black, in about 30s the dev is OK.

Jorge O

 

[Black Dog]

It's surprising how long stuff will last, even if it hasn't been that well stored. Generally, two part devs have the best keeping qualities. A squirt of Tetenal protectan also works a treat.