Silver Film
Silver film is available in two types, positive film where the copy is opposite to the original or negative where the copy is the same as the original. Available in 16mm, 35mm or 105mm roll film, fiche or aperture cards.

Diazo Film
Diazo film produces either blue or black images from the original microfilm. The duplicate is the same as the original. Available in 16mm, 35mm or 105mm roll film, fiche or aperture cards. A very low cost medium with up to 50 years archival life. For normal commercial purposes this is the ideal, very hardwearing copy medium. Diazo film is processed using ammonia gas or liquid.

Vesicular Film
Vesicular film produces white image on a powder blue background from the original film. The duplicate is opposite to the original. Available in 16mm, 35mm or 105mm roll film, fiche or aperture cards. A low cost medium with 10 to 20 years archival life.