This liquid concentrate developer is extremely versatile and has "Solution B," which is added to control contast on any paper. Tones ranging from high-density cold images to warm portrait blacks are possible, depending on dilution.

One gallon makes of TST produces 12 gallons for heavy-duty applications; 16 gallons of commercial strength developer; 20 gallons portrait strength, and can develop over 4,000 8 x 10" prints. Has a working temperature range of 55 - 90°F.