Kodak Professional T-max Developer 1LKodak's Professional T MAX Developer is a liquid concentrate black and white film developer helping to produce expanded shadow detail and maintain accurate tonal reproduction with normally processed and push processed roll films. This concentrate is a buffered solution designed to be diluted with water at 1: 4 for easy mixing for a small tank and rotary tube development. This 1 l bottle contains enough concentrate to make 5 l of working solution.