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Chamberland filter, France, 1875-1884

Microbiology

1875-1884

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

Stereo filters

Photographic Technology

1945-1955

Sports drinking bottle containing N-halamine modified polystyrene filter

Environmental Science & Technology

Bucket containing one filter of N-halamine modifie

Environmental Science & Technology

Kodacolour Adjustable filter for f/1.9 Cine Kodak cameras

Photographic Technology

Filter, for Morokhovets' dialysing filters

Experimental Chemistry

Fuel filter, for Beardmore Heavy Oil diesel engine, from Airship R. 101

Aircraft Propulsion

1928

Two sintered filters for microfiltration

Experimental Chemistry

Filter disc 1 x 1/16

Industrial Chemistry

Filter containing N-halamine polystyrene beads

Environmental Science & Technology

2006-2007

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

Kodak Monochromatic viewing filter. 42mm diameter Wratten 90 olive viewing filter in plastic mount with cover and neck cord. With spare filter.

Kodak Monochromatic viewing filter

Photographic Technology

1959

Wratten Series VII K2 filter. Rim mounted, 50mm diameter. Yellow gelatine cemented. Wratten and Wainwright.

Wratten Series VII K2 filter

Photographic Technology

Filter in 32mm mount; in clear plastic case.

Actina UV filter

Photographic Technology

Pale yellow filter in brass rim. 32mm in diameter. Ensign.

Ensign "C" screen filter

Photographic Technology

Filter in special spring clip mount for Purma camera. No 3 green.

purma special filter

Photographic Technology

Agfa filter (green). Green dyed in the mass glass filter 30mm diameter retained by clip in filter holder for 32mm lens mount. In plastic screwcap container

Agfa green filter

Photographic Technology

Lignose 45mm square filter. Yellow gelatine filter bound in 45mm glasses. 'Naturfarbenfilter Nr.2

Lignose 45mm yellow filter

Photographic Technology

2.5cm diameter 3 colour filter for Kodacolor film projection. In brass rim with locating lug.

Kodacolor film projection filter

Cinematography

In card mounts, three contrast filters.

Ilford filters for Multigrade paper

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

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

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

"Pocket magnifier" from filter holder with deep olive-brown pan vision. Braided neck cord. Case maked "kodak films".

Kodak pan-vision filter

Photographic Technology

Lined box for 50mm square filters; contains 7 filters (one missing).

Wratten's M screens

Photographic Technology

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

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

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

Liquid filter for potassium bichromate solution. In original carton.

Bausch and Lomb Filter

Photographic Technology

1897

ThinPrep Pap Test Filter by Hologic, 1990-2017

ThinPrep Pap Test Filter

Clinical Diagnosis

1990-2017

40.5mm diameter screw mount UV filter; in plastic case with original carton. Carl Neithold

Ceneiplan filter Color R 3

Photographic Technology

50mm diameter filter in leather pouch.

Ilford Beta 401 green filter

Photographic Technology

2 inch square gelatine filter (part only). Green. Ilford Limited.

Ilford colour filter Gamma 402

Photographic Technology

50mm yellow filter cemented gelatine. In leather wallet with instructions.

Ilford colour filter Alpha 104

Photographic Technology

Epidural Filter

Epidural filter

Anaesthesiology

1995

Kodak sky filter No. 2 - push in 21mm

21mm Kodak sky filter

Photographic Technology

Aero 1 and Aero 2 filters; 3 inch square in original pakcing.

Wratten Aero Colour Filters

Photographic Technology

U8 CK3 yellow filter in leather case, in original carton.

Cine-Kodak Colour Filter

Cinematography

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

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 2 orange.

purma special filter

Photographic Technology

Filter; no47B+2B inch square; in original box.

Kodak Wratten Motion Picture filter

Cinematography

Filter in special spring clip mount for Purma camera. No 1 yellow.

purma special filter

Photographic Technology

Graded yellow-magenta filters in card mounts. In box.

Ilford filters for Multigrade paper

Photographic Technology

32mm yellow filter in spring rim. In celluloid pillbox container.

Wratten K2 filter

Photographic Technology

34mm diameter plate yellow filter.

Photographic Technology

Ilford colour filters; orange 202, green 402, yellow 109, cemented glass filters; 25mm diameter. In fitted case.

Ilford colour Filters

Photographic Technology

Ilford red filter 24mm diameter in mount for 28mm lens (filter cementing faulty). Red glass filter.

Ilford colour filter

Photographic Technology