ILFORD ID-62

[Tom Hoskinson]

Ilford ID-62

A PQ developer for Films and Plates.
Stock Solution
Warm water (125° F or 52 °C) -----------750.0 ml
Sodium Sulphite, anhyd -------------------50.00 gm
Sodium Carbonate, anhyd -----------------60.00 gm
Hydroquinone------------------------------- 12.00 gm
Phenidone ------------------------------------0.50 gm
Potassium Bromide------------------------- 2.0 gm
Benzotriazole---------------------------------0.2 gm
Water to make 1 litre

For Film and Plate use mix 1 part developer with 1 parts water and develop for 1 minute. 20° C

ID-62 as a WARM TONE PAPER DEVELOPER
For use as a warm tone developer with enlarging papers,
Do not use Benzotriazole in the stock solution
Increase the amount of Potassium Bromide to at least 4.5 grams (up to 12 gm may be used)
Mix 1 part Stock Solution with 3 parts water and develop 2 to 4 minutes.

[Sean]

Comments from previous article system:

By Tom Hoskinson - 04:35 PM, 06-06-2006 Edit Rating: None
Also see: Ilford ID-78
http://www.apug.org/forums/article.php?a=23

Ilford Universal Concentrated Liquid Developer http://www.apug.org/forums/article.php?a=36
By Gerald Koch - 09:32 PM, 06-06-2006 Edit Rating: None
ID-62 is a Phenidone version of ID-20. Ilford markets a developer very similar to ID-62 as Bromophen. The main difference being the addition of a calcium sequestering agent. Since ID-20 uses Metol rather than Phenidone it would produce warmer tones than ID-62.
By Tom Hoskinson - 10:55 PM, 06-06-2006 Edit Rating: None
The Compact Photo-Lab Index states for ID-20:

"With Bromide paper, this developer gives good neutral blacks."

See: http://www.apug.org/forums/article.php?a=217

I would expect that ID-20 would produce somewhat warmer results if it were further diluted and the amount of Potassium Bromide was increased.

[Ian Grant]

ID-62 and ID-78 are slight variants of the original formula - ID-20

ID-62 is the Phenidone variant but due to the addition of Benzotriazole gives cold tones on warm tone papers. It is both a print & general purpose negative developer.

ID-78 again uses Phenidone which produces slightly finer grain compared to Metol and hence warmer tones, but instead of using Benzatriazole the bromide level is increased instead. It was \designed to be a Warm Tone developer.

ID-20 gives Neutral tone, ID-62 cold tones and ID-78 warm tones - using warm tone papers.

Ian