ILFORD HYPAM is a non-hardening rapid fixer supplied as a liquid concentrate that is diluted with water for use. It is easy and convenient to use. Without the addition of a hardener it is suitable for all black and white film and paper, manual and machine processing applications in the temperature range of 18–40ºC (66–104ºF). It can also be used for fixing other specialist, X-ray, scientific products and graphic arts materials. The fixing agent in HYPAM is ammonium thiosulphate, it contains no sodium thiosulphate (hypo).