GB494882A - Improvements in or relating to apparatus for detecting the presence of poisonous gases or vapours in the atmosphere - Google Patents

Improvements in or relating to apparatus for detecting the presence of poisonous gases or vapours in the atmosphere

Info

Publication number
GB494882A
GB494882A GB774838A GB774838A GB494882A GB 494882 A GB494882 A GB 494882A GB 774838 A GB774838 A GB 774838A GB 774838 A GB774838 A GB 774838A GB 494882 A GB494882 A GB 494882A
Authority
GB
United Kingdom
Prior art keywords
combustion
test
gases
atmosphere
chamber
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
GB774838A
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
Priority to GB774838A priority Critical patent/GB494882A/en
Publication of GB494882A publication Critical patent/GB494882A/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
    • 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

Abstract

<PICT:0494882/III/1> A device for detecting poisonous gases &c. in the atmosphere comprises a combustion chamber 3 in which the air is subjected to heat by an electric filament 6 or a spirit lamp, and a test chamber 2 in which the products of combustion act on a test paper 18 or like indicator. A suitable test paper is treated with starch, potassium iodide, and potassium iodate, and is capable of indicating the presence of all gases yielding chlorine or sulphur dioxide as combustion products. The atmosphere enters by way of a filter chamber 14 containing absorbents to remove any impurity which might vitiate the test. To enable a poisonous gas to be identified a number of such chambers 14 containing absorbents for different gases may be connected in parallel and utilized in turn. Alternatively a series of different test papers may be used. The tube 1 connecting the combustion and test chambers may be lined with pure Para rubber to absorb any ozone formed by the combustion.
GB774838A 1938-03-12 1938-03-12 Improvements in or relating to apparatus for detecting the presence of poisonous gases or vapours in the atmosphere Expired GB494882A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB774838A GB494882A (en) 1938-03-12 1938-03-12 Improvements in or relating to apparatus for detecting the presence of poisonous gases or vapours in the atmosphere

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB774838A GB494882A (en) 1938-03-12 1938-03-12 Improvements in or relating to apparatus for detecting the presence of poisonous gases or vapours in the atmosphere

Publications (1)

Publication Number Publication Date
GB494882A true GB494882A (en) 1938-11-02

Family

ID=9838958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB774838A Expired GB494882A (en) 1938-03-12 1938-03-12 Improvements in or relating to apparatus for detecting the presence of poisonous gases or vapours in the atmosphere

Country Status (1)

Country Link
GB (1) GB494882A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2602729A (en) * 1941-10-30 1952-07-08 Curry Manfred Apparatus for determining the concentration of a chemically active gas in an atmosphere
WO1979000122A1 (en) * 1977-09-01 1979-03-22 Fospur Ltd Identification of hazardous nature of unknown materials
CN103728298A (en) * 2014-01-28 2014-04-16 黄石市食品药品检验所 Quick quantity-limited detection method for detecting quantity of sulfur dioxide residual in traditional Chinese medicinal materials, decoction pieces of traditional Chinese medicinal materials, agricultural products and foods
CN110243811A (en) * 2019-04-30 2019-09-17 广州超威生物科技有限公司 A method of evaluation and test chlorine dioxide rate of release
CN113504223A (en) * 2021-05-27 2021-10-15 上海工艺美术职业学院 Gas detection valve and ozone disinfection bedspread

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2602729A (en) * 1941-10-30 1952-07-08 Curry Manfred Apparatus for determining the concentration of a chemically active gas in an atmosphere
WO1979000122A1 (en) * 1977-09-01 1979-03-22 Fospur Ltd Identification of hazardous nature of unknown materials
CN103728298A (en) * 2014-01-28 2014-04-16 黄石市食品药品检验所 Quick quantity-limited detection method for detecting quantity of sulfur dioxide residual in traditional Chinese medicinal materials, decoction pieces of traditional Chinese medicinal materials, agricultural products and foods
CN110243811A (en) * 2019-04-30 2019-09-17 广州超威生物科技有限公司 A method of evaluation and test chlorine dioxide rate of release
CN113504223A (en) * 2021-05-27 2021-10-15 上海工艺美术职业学院 Gas detection valve and ozone disinfection bedspread
CN113504223B (en) * 2021-05-27 2022-11-25 上海工艺美术职业学院 Gas detection valve and ozone disinfection bedspread

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