{"id":663,"date":"2024-07-09T11:50:42","date_gmt":"2024-07-09T08:50:42","guid":{"rendered":"https:\/\/gazolcum.com\/?p=663"},"modified":"2024-07-09T11:50:42","modified_gmt":"2024-07-09T08:50:42","slug":"gaz-maskesi-filtresi-raf-omru","status":"publish","type":"post","link":"https:\/\/gazolcum.com\/en\/gaz-maskesi-filtresi-raf-omru\/","title":{"rendered":"Gas Mask Filter Shelf Life"},"content":{"rendered":"
\n

One\u00a0<\/span>gas mask filter<\/span><\/strong>\u00a0\u2013 like all other filters \u2013 it has a limited shelf life and\u00a0<\/span>breakthrough time<\/span><\/strong>\u00a0It is called . This means that the carbon granules are now\u00a0<\/span>cannot absorb a pollutant (toxic gas)<\/span><\/strong>\u00a0time occurs. As a result, the user can no longer breathe clean filtered air.<\/span><\/p>\n

One\u00a0<\/span>gas mask filter,<\/span><\/strong>\u00a0It has a microporous structure made of carbon with a very large absorption surface in a small cartridge. Thanks to this technology, filters contain less carbon (220 to 230 mL), which reduces weight and breathing effort. Tables with theoretical shelf lives are available, but they should never be taken. Indeed, the shelf life of a gas filter depends on various factors.<\/span><\/p>\n<\/div>\n

Factors affecting gas filter shelf life<\/span><\/h2>\n
\n
\n
\n
    \n
  • gas concentration<\/span><\/strong>\u00a0: Higher concentrations rapidly accumulate the pollutant in carbon, accelerating the elimination time.<\/span><\/li>\n
  • Filtered air flow or\u00a0<\/span>respiratory rate<\/span><\/strong>\u00a0: theoretical shelf lives are determined based on an air flow of 30 liters per minute. A higher respiratory rate will reduce excretion time.<\/span><\/li>\n
  • Heat<\/span><\/strong>\u00a0: If the operating temperature increases, the shelf life of the gas filter will decrease<\/span><\/li>\n
  • Relative humidity<\/span><\/strong>\u00a0:\u00a0<\/span>VOC\u2019ler<\/span>\u00a0High humidity will accelerate excretion time. The opposite effect occurs for some gases such as ammonia (nh3) or hydrogen sulfide (h2s).<\/span><\/li>\n
  • Shocks<\/span><\/strong>\u00a0: Shocks in a breathing cartridge have harmful effects. Because they pack the granules, shocks will reduce their absorption power<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div>\n
    <\/div>\n<\/div>\n

    Gas mask filter shelf life calculation<\/span><\/h2>\n
    \n

    There is a formula for calculating the shelf life of a gas filter:<\/span><\/p>\n

    Shelf life = (1 000 000 x filter capacity*) \/ (respiration rate x gas concentration)<\/span><\/strong><\/p>\n

    * Filter capacity depends on the manufacturer. Available on technical information pages.<\/span><\/p>\n<\/div>\n

    Breakthrough time of gas mask filter<\/span><\/h2>\n

    Gas filters for negative pressure breathing apparatus<\/span><\/h3>\n
    \n
    \n
    \n

    Test preface:\u00a0<\/span>Gas masks<\/span>\u00a0(negative pressure) test gas concentrations were set at 1,000 ppm (0.1 vol%) for class 1 and 5,000 ppm (0.5 vol%) for class 2.<\/span><\/p>\n

    Spasciani DIN Rd40 filters<\/span>\u00a0Fits most EN 148-1 approved gas masks with 40 mm universal thread.<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n

    \n\n\n\n\n\n\n\n\n\n\n
    Filter type<\/span><\/th>\ntest gas<\/span><\/th>\nbreakthrough time<\/span><\/th>\n<\/tr>\n
    1st Class<\/span><\/strong><\/th>\nClass 2<\/span><\/strong><\/th>\n<\/tr>\n
    A<\/span><\/td>\nCyclohexane (C6H12)<\/span><\/td>\n70 dk<\/span><\/td>\n35 min<\/span><\/td>\n<\/tr>\n
    B<\/span><\/td>\nChlorine (Cl2)<\/span><\/td>\n20 minutes<\/span><\/td>\n20 minutes<\/span><\/td>\n<\/tr>\n
    B<\/span><\/td>\nHydrogen sulfide (H2S)<\/span><\/td>\n40 min<\/span><\/td>\n40 min<\/span><\/td>\n<\/tr>\n
    B<\/span><\/td>\nHydrogen cyanide (HCN)<\/span><\/td>\n25 min<\/span><\/td>\n25 min<\/span><\/td>\n<\/tr>\n
    E<\/span><\/td>\nSulfur dioxide (SO2)<\/span><\/td>\n20 minutes<\/span><\/td>\n20 minutes<\/span><\/td>\n<\/tr>\n
    K<\/span><\/td>\nAmmonia (NH3)<\/span><\/td>\n50 min<\/span><\/td>\n40 min<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Gas filters for powered air-purifying respirators<\/span><\/h3>\n
    \n

    Test preface:\u00a0<\/span>PAPR masks<\/span>\u00a0Test gas concentrations were set at 500 ppm (0.05 vol%) for class 1 and 1,000 ppm (0.1 vol%) for class 2.<\/span><\/p>\n\n\n\n\n\n\n\n\n\n\n
    Filter type<\/span><\/strong><\/th>\ntest gas<\/span><\/strong><\/th>\nbreakthrough time<\/span><\/strong><\/th>\n<\/tr>\n
    1st Class<\/span><\/strong><\/th>\nClass 2<\/span><\/strong><\/th>\n<\/tr>\n
    A<\/span><\/td>\nCyclohexane (C6H12)<\/span><\/td>\n70 dk<\/span><\/td>\n35 min<\/span><\/td>\n<\/tr>\n
    B<\/span><\/td>\nChlorine (Cl2)<\/span><\/td>\n20 minutes<\/span><\/td>\n20 minutes<\/span><\/td>\n<\/tr>\n
    B<\/span><\/td>\nHydrogen sulfide (H2S)<\/span><\/td>\n40 min<\/span><\/td>\n40 min<\/span><\/td>\n<\/tr>\n
    B<\/span><\/td>\nHydrogen cyanide (HCN)<\/span><\/td>\n25 min<\/span><\/td>\n25 min<\/span><\/td>\n<\/tr>\n
    E<\/span><\/td>\nSulfur dioxide (SO2)<\/span><\/td>\n20 minutes<\/span><\/td>\n20 minutes<\/span><\/td>\n<\/tr>\n
    K<\/span><\/td>\nAmmonia (NH3)<\/span><\/td>\n50 min<\/span><\/td>\n40 min<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Breakthrough times of special filters (AX and Hg-P3)<\/span><\/h3>\n
    \n\n\n\n\n\n
    Filter type<\/span><\/strong><\/th>\ntest gas<\/span><\/strong><\/th>\ngas concentration<\/span><\/strong><\/th>\nbreakthrough time<\/span><\/strong><\/th>\n<\/tr>\n
    AX<\/span><\/td>\nIsobutane (C4H10)<\/span><\/td>\n2.500 ppm<\/span><\/td>\n50 min<\/span><\/td>\n<\/tr>\n
    Hg-P3<\/span><\/td>\nmercury vapor<\/span><\/td>\n1.6 ml\/mg<\/span><\/td>\n100 hours<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Bir\u00a0gaz maskesi filtresinin\u00a0\u2013 di\u011fer t\u00fcm filtreler gibi \u2013 s\u0131n\u0131rl\u0131 bir raf \u00f6mr\u00fc vard\u0131r ve buna\u00a0at\u0131l\u0131m s\u00fcresi\u00a0denir . Bu, karbon gran\u00fcllerinin art\u0131k\u00a0bir kirleticiyi (toksik gaz) ememedi\u011fi\u00a0zaman meydana gelir . Sonu\u00e7 olarak, kullan\u0131c\u0131 art\u0131k temiz filtrelenmi\u015f hava soluyamaz. Bir\u00a0gaz maskesi filtresi,\u00a0k\u00fc\u00e7\u00fck bir kartu\u015fta \u00e7ok b\u00fcy\u00fck bir emilim y\u00fczeyine sahip karbondan yap\u0131lm\u0131\u015f mikro g\u00f6zenekli bir yap\u0131ya sahiptir. Bu […]<\/p>","protected":false},"author":1,"featured_media":664,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-663","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-haberler"],"_links":{"self":[{"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/posts\/663","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/comments?post=663"}],"version-history":[{"count":1,"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/posts\/663\/revisions"}],"predecessor-version":[{"id":665,"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/posts\/663\/revisions\/665"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/media\/664"}],"wp:attachment":[{"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/media?parent=663"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/categories?post=663"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/tags?post=663"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}