Kodak 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 small tank and rotary tube development. This 1-liter bottle contains enough concentrate to make 5 liters of working solution. Professional T-MAX developer is designed for one-shot use and should not be replenished. It is meant for roll film only and not recommended for use with sheet films.