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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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FR860627D1939-10-051939-10-05Appareil détecteur de gaz, et d'épreuve des cartouches-filtres, filtres individuels et filtres collectifs d'abris, etc.
ExpiredFR860627A
(fr)
Dispositif permettant d'effectuer avec précision l'essai dit <<aux fumées>> des cartouches de masques à gaz et de tous appareils de protection en général