Radiomat XR Developer and Radiomat XR Fixer - concentrated developer and fixer. Suitable for Automatic Processors - eg Dürr Automat or Velopex. Single bottle formulation for Fixer and developer. Each bottle contains 1.5 litre and makes 5 litres of solution. Mix 1.5 litre bottle of developer with 3.5 litre of water and mix thoroughly. Mix 1.5 litre bottle of fixer with 3.5 litre of water and mix thoroughly. Use in appropriate tanks in processor. DO NOT MIX DEVELOPER AND FIXER. Follow the machine manufacturers instructions for processing. Renew solutions in machine completely every three months for optimum function when using automatic regeneration. More frequently for low usage machines. For Manual regeneration - top up twice weekly with 0.5 litre of the appropriate solutions. This is a general rule for processing 7 films a day.