Frequently Asked Question

In the vast majority of cases we list the most up-to-date times from the manufacturer; however, there can be several reasons for discrepancies including:

• Data from the manufacturer found to be incorrect by many users

  An example of this is the Kodak published time for Tri-X in HC-110 (B). Kodak's data sheet specifies 3 minutes, but so many people have found this to be short that it is widely agreed that a time of 4.5-6 minutes is more accurate.

• Data published by manufacturer is inconsistent

  In some cases data sheets produced at different times, or in different locations show different data. In the early 1980's Agfa produced different data sheets for Rodinal in the US, Europe and Australia, sometimes showing wildly different times.

• Contradictory data

  Film and developer manufacturers publish different times for the same products. We publish the developer manufacturer's data in these instances.