Yakachena kamuri standardization

MuUnited States, kusvika pakupera kwaNovember 2001, federal standard 209E (FED-STD-209E) yakashandiswa kutsanangura zvinodiwa pamakamuri akachena. Musi waMbudzi 29, 2001, zviyero izvi zvakatsiviwa nekuburitswa kwe ISO Specification 14644-1. Kazhinji, imba yakachena inoshandiswa kugadzira kana kutsvagisa kwesainzi inzvimbo inodzorwa ine mwero wakaderera wezvinosvibisa, zvakaita seguruva, hutachiona hwemhepo, aerosol particles, uye kemikari mhute. Kuve nemazvo, imba yekuchenesa ine nhanho inodzorwa yekusvibisa, iyo inotsanangurwa nehuwandu hwezvikamu pacubic mita pachiyero chakatarwa. Munzvimbo yemadhorobha, mhepo yekunze ine 35 miriyoni zvidimbu pa cubic metre, 0.5 microns mudhayamita kana kuti hombe, inoenderana neISO 9 kamuri rakachena padanho rakaderera rekamuri rakachena. Makamuri akachena anorongwa maererano nekuchena kwemhepo. MuUS Federal Standard 209 (A kusvika D), nhamba yezvikamu zvakaenzana kana kuti zvakakura kudarika 0.5mm inopimwa mu 1 cubic foot yemhepo, uye kuverenga uku kunoshandiswa kuronga makamuri akachena. Iyi metric nomenclature inogamuchirwawo neyazvino 209E vhezheni yechiyero. China inoshandisa federal standard 209E. Chiyero chitsva ndecheInternational Standards Organisation's TC 209. Miyero miviri iyi inoronga makamuri akachena zvichienderana nehuwandu hwezvikamu zviri mumhepo yerabhoritari. Iyo yakachena kamuri yemhando zviyero FS 209E uye ISO 14644-1 inoda yakatarwa particle count kuyerwa uye kuverenga kurongedza hutsanana hutsanana hwekamuri yakachena kana nzvimbo yakachena. MuUnited Kingdom, British Standard 5295 inoshandiswa kuisa makamuri akachena. Iyi chiyero ichakurumidza kutsiviwa neBS EN ISO 14644-1. Makamuri akachena anorongwa maererano nehuwandu uye saizi yezvikamu zvinotenderwa pavhoriyamu yemhepo. Nhamba huru dzakaita se "Kirasi 100" kana "Kirasi 1000" dzinoreva FED_STD209E, inomiririra huwandu hwezvikamu zve 0.5 mm kana saizi yakakura inotenderwa cubic foot yemhepo.