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MSA Safety Inc
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Mine Safety Appliances Co
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Publication of FR1231102ApublicationCriticalpatent/FR1231102A/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
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
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FR791084A1958-04-031959-04-02
Method and apparatus for determining the presence of oxidizing agents
ExpiredFR1231102A
(en)