*Due to the chemicals in this product, it is available for in-store pick up only. ILFORD ILFOTEC HC is a Black and white liquid film developer that is highly conentrated. It can be diluted to accomodate all processing. Due to the concentration of the solution, Ilford recommends diluting it into a large batch then diluting from that batch for actual use. Keep in mind that final dilution ratio depends on the desired process. This solution has a long life and good resistance to contamination, reliably producing high quality, sharp results under a wide range of conditions.