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Old 7th October 2017, 09:02 PM
JulioF JulioF is offline
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Default DK-50, may it be stored as concentrate?

I have inherited two cans of DK-50 powder, intended for 1 gallon of stock solution each. The cans must be about 1965 vintage but I am sure that they will work fine.

A gallon jug, however, is an inconvenient way to store the solution for me. But I do have nice 1 liter dark bottles. Therefore I would like to dissolve the powder in 1 liter (supposing it dissolves fully!) and keep the concentrate, i.e. 1 can in 1 liter instead of 1 gallon. This is about a 3.8 times concentration with respect to what the Great Yellow Father intended.

For use, I would dilute this concentrated solution, in order to obtain a working solution of the desired strength.

Any opěnions on this idea? Any comments on DK-50? My plan is to try it with HP5+ and FP4+.

(I gather that DK-50 was a relatively energetic developer, intended for 4x5 press photographers and not as nice as D-76)
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Old 8th October 2017, 07:57 AM
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GoodOldNorm GoodOldNorm is offline
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https://www.photo.net/discuss/thread...od-for.291485/
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Old 8th October 2017, 08:26 AM
Lostlabours Lostlabours is offline
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It'll keep about a year like D76/ID-11 once made up. Expect slightly grainier negatives than normal.

Like you I have I think 3 packets of DK50 made in the UK, it wasn't sold in tins here.

Ian
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Old 8th October 2017, 04:42 PM
JulioF JulioF is offline
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Thanks for the link and comments!
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