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Kodak Wratten Safe-light filters

Wratten No

Ilford
(equivalent)

Colour

Use

OO

Light yellow

Flashing halftones made through a KODAK Contact Screen for contrast control

OA

Greenish yellow

Black-and-white contact and duplicating materials, projection films

OB

Lime yellow

Slow Contact materials, Bromesko and Bromide etc

OC

902

Light amber

Contact and enlarging papers

1

Red

Blue-sensitive materials and most phototypesetting materials

1A

900, SL1

Light red

Slow orthochromatic materials

2

Dark red

Fast orthochromatic materials, green-sensitive x-ray films

3

907

Dark green

Some panchromatic materials

6B

Brown

Direct for Blue-sensitive X-ray films

6BR

Light brown

Indirect for X-ray films

7

Green

Some B&W Infra-red materials

7B

Green

Some panchromatic materials

8

Dark yellow

Colour print and Colour intermediate motion-picture films

9

Blue green

For Infra-red plates

10

908

Dark amber

Colour negative papers, materials, panchromatic black-and-white papers

10H

908

Dark amber

For use in handling Kodak “Ektacolor” paper

11

917

Appears opaque

For use with infrared inspection transmits infrared devices radiation

12

Light green

For development of “Kodalith” Pan materials by inspection

13
Amber Colour negative papers, panchromatic black-and-white papers (Panalure)

ML-2

Light Orange

Industrial X-ray film

GBX-2

Dark red

Most blue-sensitive x-ray films, most green-sensitive medical x-ray films