Photographers' Formulary Film Developer 23 (to Make 1L)

A simple, classic solution for processing black and white negatives, Film Developer 23 from Photographers' Formulary is similar to Kodak's D-23, and is a metol-based semi-compensating developer. This formula produces negatives with low to medium contrast, is ideal for zone system applications, and can also be used in divided or two-bath compensating development processes with sodium metaborate (Kodalk). When mixed, the working solution has an approximate shelf life of approximately six months, and one liter of solution is sufficient for processing about four rolls of 35mm film. The working solution efficiency can be extended to approximately 25 rolls if replenished with the optional DK-25 Replenisher. This kit contains enough metol and sodium sulfite to make 1 liter of working solution.