
kaala burkha shwasanyantra

black vail respirator haah johnn scott haldenne tayar kelela aanee meey 1915 madhye sadar kelela prarambhik british vayoo mukhavata hota.
itihas.
22 april 1915 roji yeepresachya dusya ladhait german sainyane mitrapakshanchya sainikanviruddha prathamach chlorinecha vishari vayoo mhanoon vapar keela. tatkal pratisad mhanoon, britishanni 3 meparyant aaplya sainikanna malmalane gundallele sutee lokar jaaree karnyas suruvat kelee. tyanantar johnn scott haldenne shodhalelya black vail respiratorcha shodh lagla. kaala burkha haah shoshak dravanat bhijavalela kapus padd hota joou kalya kapus burkha vaparoon tondavar surakshit keela jaat asey. mukhavata soodiyam hyposulphate, soodiyam carbonate, glycerine aanee panyachya dravanat prakriya karnyat aala. dravanane puresa olava rakhala jenekarun joparyant too tyachya uddeshane tayar kelelya jalrodhak sanchamadhye sathavala jaat aahe toparyant vaparnyapurvi dravanat mukhavata budavane anavashyak hote. dolhe jhakanyasathi padada kadhala jaau shakato, jyamule lacrimatory agentspasoon kahee sanrakshn milate; tathapi, mukhavata swatach ajunahi chlorine vayupasoon maryadit sanrakshn pradan karato.
pahilyanda 20 meey 1915 roji jaaree karnyat aalelya kalya burkhyamadhye padd basnyasathi eka pishavi aanee mukhavata chehnyavar thevanyasathi eka dori hotee aanee asha prakare hatane dharalya jaananya kapadyat sudharana jhaali. tathapi, teey najuk bandhkamache hote, prabhavipane vaparnyasathi prashikshan aavashyak hote aanee teey ghalananyanna mask sail honyachi chinta hotee mhanoon teey mothya pramanat sthir jhaale. kalya burkhyachya shwasanyantrala lavkarach british smoke hoodney badalale, cluney mcfersonney shodhalelya chlorine-shoshak rasayanansah upchar kelelya over daad haid canvas hood. british smoke hoodchya parichayanantar, kaala burkha aapatkalin backupmadhye parat pathvanyat aala.