GB690808A - Improvements in water analysis apparatus incorporating improvements in colorimeters and turbidimeters - Google Patents
Improvements in water analysis apparatus incorporating improvements in colorimeters and turbidimetersInfo
- Publication number
- GB690808A GB690808A GB4173649A GB4173649A GB690808A GB 690808 A GB690808 A GB 690808A GB 4173649 A GB4173649 A GB 4173649A GB 4173649 A GB4173649 A GB 4173649A GB 690808 A GB690808 A GB 690808A
- Authority
- GB
- United Kingdom
- Prior art keywords
- turbidimeters
- colorimeters
- analysis apparatus
- apparatus incorporating
- water analysis
- 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
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
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
- G01N21/79—Photometric titration
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
690,808. Reciprocating motors. ELLIS, R. A. E., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 27. 1950 [Aug. 22, 1949], No. 21736/49. Class 35. [Also in Groups XVIII, XXIV, XXIX and XL (b)] A reversible step-by-step motor comprises a ratchet-wheel 401 which can be stepped in either direction by electromagnetically-operated pawls 410, 409 playing between stops 416, 417 which are adjustable together and individually adjustable stops 414, 415. A spring-pressed pin 423 holds the wheel in any set position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4173649A GB690808A (en) | 1949-08-22 | 1949-08-22 | Improvements in water analysis apparatus incorporating improvements in colorimeters and turbidimeters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4173649A GB690808A (en) | 1949-08-22 | 1949-08-22 | Improvements in water analysis apparatus incorporating improvements in colorimeters and turbidimeters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB690808A true GB690808A (en) | 1953-04-29 |
Family
ID=10421135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4173649A Expired GB690808A (en) | 1949-08-22 | 1949-08-22 | Improvements in water analysis apparatus incorporating improvements in colorimeters and turbidimeters |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB690808A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2942515A (en) * | 1956-07-20 | 1960-06-28 | Bernardini Angelo | Photoelectric colorimeter |
GB2195115A (en) * | 1986-09-13 | 1988-03-30 | James Martin Chapman | Siphoning system |
-
1949
- 1949-08-22 GB GB4173649A patent/GB690808A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2942515A (en) * | 1956-07-20 | 1960-06-28 | Bernardini Angelo | Photoelectric colorimeter |
GB2195115A (en) * | 1986-09-13 | 1988-03-30 | James Martin Chapman | Siphoning system |
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