Chemically prepared paper by W & R Balston, made in England, UK and marketed as 'Genuine Whatman filter paper' filter paper' Chemically prepared paper for urine testing kit Laboratory Medicine 1957-1963
Sports drinking bottle containing N-halamine modified polystyrene filter Environmental Science & Technology
One of thre ThinPrep Pap Test Filter by Hologic, 1990-2017 ThinPrep Pap Test Filter Clinical Diagnosis 1990-2017
2.5cm diameter 3 colour filter for Kodacolor film projection. In brass rim with locating lug. Kodacolor film projection filter Cinematography
Three colour filter wheel for cine camera. 10cm diameter wheel with three equal segments of red, green and blue filter. Perhaps modified for Debrie Parvo or similar camera. Three colour filter wheel for cine camera Cinematography
Liquid filter for potassium bichromate solution. In original carton. Bausch and Lomb Filter Photographic Technology 1897
Three-colour filter in lens mount; with ratio 'filter'; in metal case. Kodacolor filter for Models B and BB Cine-Kodak cameras f/1.9 Photographic Technology
Verax graduated sky filter, made by Unger and Hoffman A. G. , Dresden. 30 x 60mm, graduated yellow filter, number 26 sliding in metal mount with spring lens holder, adjustable from 25 - 35mm. In original carton. Verax graduated sky filter Photographic Technology
"Pocket magnifier" from filter holder with deep olive-brown pan vision. Braided neck cord. Case maked "kodak films". Kodak pan-vision filter Photographic Technology
Three orange celluloid masks for printing frame, 1/4 plate size. Apertures: 7.2cm x 9.7cm square corners. 7.1 x 9.5cm rounded corners. 8.7 x 6.3 oval apertures. In original packing. Ensign see-thru masks Photographic Technology
Lined box for 50mm square filters; contains 7 filters (one missing). Wratten's M screens Photographic Technology
Sanger shepherd trichromatic filters red, green and blue filters mounted between 8 x 8cm glasses. Green filter faded in centre. In Lumiere filter box. Sanger shepherd trichromatic filters Photographic Technology
Lignose 45mm square filter. Yellow gelatine filter bound in 45mm glasses. 'Naturfarbenfilter Nr.2 Lignose 45mm yellow filter Photographic Technology
Simplex graduated filter (yellow). Dyed in the mass filter graduated from clear to yellow. 45mm x 75mm. In Filter holder 45mm diameter. In box with instructions. Simplex graduated filter Photographic Technology
50mm yellow filter cemented gelatine. In leather wallet with instructions. Ilford colour filter Alpha 104 Photographic Technology
2 inch square gelatine filter (part only). Green. Ilford Limited. Ilford colour filter Gamma 402 Photographic Technology
40.5mm diameter screw mount UV filter; in plastic case with original carton. Carl Neithold Ceneiplan filter Color R 3 Photographic Technology
Eastman Kodak Company. Kodacolor filter for f/1.9 Cine Kodak lens. 'Aperture' adjustabe by two masks set by rotating ring, calibrated A, B, C,d. In small lined case. Kodacolor Adjustable Filter Cinematography
Wratten 85 filter, by Kodak Limited. 48mm diameter Wratten 85 filter in metal rim. For correcting daylight to suit type A film. Gelatine cemented in glass. In plastic wallet Wratten 85 filter Photographic Technology 1962
Aero 1 and Aero 2 filters; 3 inch square in original pakcing. Wratten Aero Colour Filters Photographic Technology
6cm diameter brown glass filter in leatherette covered card rim, with velvet lining. For use with horizontal enlarger. safelight filter for enlarger Photographic Technology
Filter in special spring clip mount for Purma camera. No 1 yellow. purma special filter Photographic Technology
Filter in special spring clip mount for Purma camera. No 2 orange. purma special filter Photographic Technology
Yellow filter quality II 35mm diameter, cemented glass in 32mm push-on screw mount with lens cap for 1257. R. & J. Beck. Beck-Harris spectrum filter Photographic Technology
Six colour glass filters in original packing; 21mm, 23mm, 25mm, 28mm, 33mm, 38mm. Johnson Precision Colour Filters Photographic Technology
Colour filter; 30mm diameter yellow glass filter; in transparent plastic case. Johnson Precision Colour filter Photographic Technology
Filter, in box with instruction leaflet: KODAK COLOR SCREEN. Rim of filter engraved: No.3 yellow glass (discoloured) Kodak Color Screen Filter No 3 Yellow Photographic Technology
Agfa colour filter, 60mm square gelatine filter cemented between glasses. Type A to daylight conversion filter. Agfa colour filter Photographic Technology
32mm yellow filter in spring rim. In celluloid pillbox container. Wratten K2 filter Photographic Technology
Graded yellow-magenta filters in card mounts. In box. Ilford filters for Multigrade paper Photographic Technology
