Preparing and applying glazes and colours.

Finely-ground borosilicate glass (coloured by trace metallic compounds) which melts at 800 to 820 °C is fused to the surface of certain metals.

Working in a darkened room (often with subdued red light).Processes include developing and printing or enlarging colour and black and white films and papers.

Developing colour or black and white films or prints. Fixing colour or black and white films or prints. Stop baths used between developing and fixing. Chemicals used for specialist treatments.