GB806928A - Improvements in or relating to methods and devices for testing for the presence of water in suspension in other liquids - Google Patents
Improvements in or relating to methods and devices for testing for the presence of water in suspension in other liquidsInfo
- Publication number
- GB806928A GB806928A GB897756A GB897756A GB806928A GB 806928 A GB806928 A GB 806928A GB 897756 A GB897756 A GB 897756A GB 897756 A GB897756 A GB 897756A GB 806928 A GB806928 A GB 806928A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter paper
- water
- colour
- salts
- capsule
- 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
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
- G01N31/222—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating moisture content
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Biophysics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
<PICT:0806928/III/1> The presence of small amounts of water suspended in fluids, e.g. aviation fuels, is detected by bringing the liquid into contact with a water-soluble powder, which changes colour, and then with a water-absorptive medium. The preferred form consists of a filter paper coated on the up-stream side with a water-soluble dye, ferric thiocyanate, or a mixture of salts developing a colour, e.g. prussian blue. Preferably the impregnated filter paper is mounted in a transparent capsule, and included in a by-pass circuit attached to the fuel supply pipe. A suitable capsule comprises two parts 1, 2, Fig. 1, made of methyl methacrylate, which may be screwed together with the sheet of filter paper 10 inserted between them, at its periphery, which is not affected by the colour change. The coating 10a on the filter paper may be a powdered mixture of ferrous ammonium sulphate and potassium ferricyanide, or ferric alum and potassium ferrocyanide. A small amount of citric or tartaric acid may be included, if necessary, to develop the colour. The assembly may be fitted to a hypodermic graduated syringe, and a measured quantity of the liquid drawn through the filter paper. Alternatively untreated filter paper or a cotton wool plug may be used in conjunction with a capsule containing the salts placed upstream thereto. The inorganic salts may be replaced by dyestuffs, e.g. crystal violet, auramine, rhodamine or magenta.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB897756A GB806928A (en) | 1956-03-22 | 1956-03-22 | Improvements in or relating to methods and devices for testing for the presence of water in suspension in other liquids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB897756A GB806928A (en) | 1956-03-22 | 1956-03-22 | Improvements in or relating to methods and devices for testing for the presence of water in suspension in other liquids |
Publications (1)
Publication Number | Publication Date |
---|---|
GB806928A true GB806928A (en) | 1959-01-07 |
Family
ID=9862965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB897756A Expired GB806928A (en) | 1956-03-22 | 1956-03-22 | Improvements in or relating to methods and devices for testing for the presence of water in suspension in other liquids |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB806928A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4298345A (en) | 1977-11-21 | 1981-11-03 | Damon Corporation | Method and apparatus for chemical spot test analysis |
-
1956
- 1956-03-22 GB GB897756A patent/GB806928A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4298345A (en) | 1977-11-21 | 1981-11-03 | Damon Corporation | Method and apparatus for chemical spot test analysis |
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