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Ilford Safe-light filters

Ilford No
Wratten
Colour Use  
 
(equivalent)
     

SL1

 

Orange

Blue sensitive materials, including Multigrade, Ilfospeed, GAlerie and also photolettering fiIm and paper.

900

 

Bright red Very slow Orthochromatic materials. Lith-type.
902

OC

Light brown As SLI above
903

 

Yellow green

Infra-red, absorbs Infra red completely

904

 

Dark-brown

Fast, blue sensitive materials such as Iine film and electron microscopic film and some photographic papers.

905

 

Olive green Xray material
906

 

Dark "Ruby" red Orthochromatic materials and recording materials.
907

13

Dark green Very slow panchromatic materials.
908

10, 10H

Very dark green All panchromatic materials, colour papers and ILFOCHROME. Although designed for the maximum possible efficiency, this safelight must be used with extreme care. Fast panchromatic materials must not be exposed to direct light from this filter for any appreciable length of time.
909

 

Green Desensitised Panchromatic materials
914

 

Sepia X-ray films
915

 

Light red

Orthochromatic materials such as graphic arts materials

916

 

Green Red sensitive holographic plates
917

 

Infra red

For use with infra-red image transmitting intensifiers