Ilford Washaid diluted, how long does it keep?

Recent Classifieds

Forum statistics

Threads
178,697
Messages
2,458,254
Members
94,613
Latest member
LucyJoanP2975
Recent bookmarks
0

sandermarijn

Member
Joined
Oct 19, 2005
Messages
704
Location
Leiden, Neth
Shooter
35mm
I've recently started using Washaid with my FB prints, in order to cut down on the rinsing. It gives me a bad feeling to waste so much high quality tap water on a print.

In their fact sheet, Ilford Harman state a "working strength" of the 1+4 dilution of 7 days. I suppose this is the time the mixture will last when kept in a closed bottle with no air. It seems awfully short to me.

Does anybody know if one can cheat and use it for longer? Does the stuff decay because it reacts with oxygen or does it degrade regardless of that (because of a possible reaction with the water or something in it)?

I don't print very regularly, once every three weeks maybe. So if the Ilford-given keeping period is strict and correct, then I may better stop using it and rinse my paper longer with plain water instead, just like I used to.

Anybody have experience with keeping Washaid? Any info is much appreciated, thanks.
 

Anon Ymous

Member
Joined
Feb 7, 2008
Messages
2,954
Location
Greece
Shooter
35mm
Or you can buy some sodium sulfite and dissolve 20g of it in 1l of water. You'll toss it after it's used, it doesn't keep well once in solution.
 
OP
OP
sandermarijn

sandermarijn

Member
Joined
Oct 19, 2005
Messages
704
Location
Leiden, Neth
Shooter
35mm
Thanks for that suggestion. However, I prefer not to mingle with 'raw' chemicals myself. I also would not know where to get sodium sulfite here in the Netherlands. On the other hand, if Washaid proves to be as unpractical as I suspect (short keeping time) then I may go look for the sodium sulfite solution and evaluate the risks of handling.
 

Ian Grant

Subscriber
Joined
Aug 2, 2004
Messages
21,982
Location
West Midland
Shooter
Multi Format
As others have said you'll have far worse chemicals in your kitchen & bathroom, Sulphite's not a chemical to worry about when it comes to handling. It's used as a food preservative.

Ian
 
OP
OP
sandermarijn

sandermarijn

Member
Joined
Oct 19, 2005
Messages
704
Location
Leiden, Neth
Shooter
35mm
Food preservatives should not burn my skin off, I agree. But before becoming my own chemist, does anybody have experience with the keepability of Washaid in particular? Or is everybody rinsing with water only, like I have done for years?
 
Photrio.com contains affiliate links to products. We may receive a commission for purchases made through these links.
To read our full affiliate disclosure statement please click Here.

PHOTRIO PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Ilford ADOX Freestyle Photographic Stearman Press Weldon Color Lab
Top Bottom