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Expired
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GB2116539A
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Individual
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Priority to GB2116539ApriorityCriticalpatent/GB531408A/en
Publication of GB531408ApublicationCriticalpatent/GB531408A/en
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
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Life Sciences & Earth Sciences
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Molecular Biology
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Physics & Mathematics
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Chemical & Material Sciences
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Analytical Chemistry
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Biochemistry
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Sampling And Sample Adjustment
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Abstract
531,408. Detecting poisonous gases. RING- ROSE, H. T. July 21, 1939, No. 21165. [Class 1 (i)] Poisonous gases are detected by the formation of a smoke when a mixture of the contaminated air and ammonia is heated. The apparatus comprises a chimney 2 with glass tube 1 containing an electrically heated filament 13 which sets up a convection current, drawing in atmospheric air through a port 8 and ammonia through port 4, the ammonia being derived from a mass of absorbent material 7 impregnated with an ammonia-yielding substance.
GB2116539A1939-07-211939-07-21Improvements in or relating to apparatus for detecting the presence of poisonous gases in the atmosphere
ExpiredGB531408A
(en)
Method and apparatus for the detection of atmospheric pollutants through thermal desortion. (Machine-translation by Google Translate, not legally binding)
A system for the self-extraction of smoke and gases in appliances or containers of message (Machine-translation by Google Translate, not legally binding)