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Pyrocat HD dilution - development time relation

Anon Ymous

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Hello all...

There are several common Pyrocat HD dilutions, such as 2:2:100, 1:1:100, 1:1:150 etc. I'm only interested in those where there are equal volumes of the A and B parts. Assuming that I know the development time for a specific film - dilution, is there a rule of thumb that will give me a development time for another dilution?

Thanks in advance.
 

Ian Grant

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I process the same films 15min 20ºC in an inversion tank at 1+1 to 100 and 9 minutes in a dish at 2+2 to 100. There's not really a rule of thumb as it varies with developer types.

Ian
 
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Anon Ymous

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Oh yes, I know that different developers behave differently when diluted, I was asking specifically about Pyrocat HD. Anyway, thanks for the tip.