Adding More KBr to PF 130 Developer

[Alex Hawley]

Anyone ever tried adding more KBr to Ansco/PF 130 for a slightly warmer tone? The formula already contains KBr but I was wondering if it could be warmed up just a tad without sacrificing anything.

 

[Tom Hoskinson]

Agfa/Ansco 130 - changing the image tone

Anyone ever tried adding more KBr to Ansco/PF 130 for a slightly warmer tone? The formula already contains KBr but I was wondering if it could be warmed up just a tad without sacrificing anything.

The 1939 Agfa/Ansco booklet "Formulas for Photographic Use." suggests that "to increase warmth, add bromide up to double the amount called out in the formula." 5.5 grams of potassium Bromide is the amount called out in the Ansco/Agfa formula.

The 1939 Agfa/Ansco booklet also states (in relation to Ansco/Agfa 130) "Greater contrast can be obtained by using the developer stock solution full strength." (As opposed to the 1:1 dilution). Softer results can be obtained by diluting 1 part of the stock solution with 2 parts water."

 

[Alex Hawley]

Thanks Tom. That's just what I was looking for.