GB1335388A - Colourimeter - Google Patents

Colourimeter

Info

Publication number
GB1335388A
GB1335388A GB1335388DA GB1335388A GB 1335388 A GB1335388 A GB 1335388A GB 1335388D A GB1335388D A GB 1335388DA GB 1335388 A GB1335388 A GB 1335388A
Authority
GB
United Kingdom
Prior art keywords
test tube
top panel
apertured
photo
shutter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB1335388A publication Critical patent/GB1335388A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/251—Colorimeters; Construction thereof

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

1335388 Colour meter J E F HOLLEY 22 Oct 1971 [30 July 1970] 36939/70 Heading G2J [Also in Division G1] In a colour meter for use in schools &c., comprising a closed cabinet 1 having a top panel 6, the top panel is apertured so that a support plate 16 (carrying a test tube holder 29, Fig. 2, a lamp 31, a pivotally mounted apertured shutter 32 a colour filter 39 and a printed circuit board 35 with a photo-cell 37) is able to rest on a top panel with a test tube holder 29 &c. projecting through the aperture. The support is itself apertured Fig. 3A (not shown) to enable the changing of the filter, removal of the test tube, and the movement of the shutter 32 which has a tadpole shaped aperture. A circuit of the photo-cell and its associated ammeter 10 is disclosed.
GB1335388D 1970-07-30 1970-07-30 Colourimeter Expired GB1335388A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3693970 1970-07-30

Publications (1)

Publication Number Publication Date
GB1335388A true GB1335388A (en) 1973-10-24

Family

ID=10392420

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1335388D Expired GB1335388A (en) 1970-07-30 1970-07-30 Colourimeter

Country Status (1)

Country Link
GB (1) GB1335388A (en)

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Legal Events

Date Code Title Description
PS Patent sealed