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Nws yog Antoine Lavoisier uas thawj zaug pom cov txheej txheem pom nyob rau xyoo 18th lig. Nws tau pom tias cov kua tuaj yeem raug cais tawm ntawm cov khib nyiab los ntawm kev siv cov ntawv lim.

Txij thaum ntawd los, kev lim dej tau dhau los ua cov txheej txheem tseem ceeb hauv ntau qhov kev lag luam, suav nrog tshuaj, khoom noj thiab dej haus, thiab kev kho dej. Nws koom nrog kev sib cais ntawm cov khoom los ntawm cov khoom ntxeem tau, xws li cov ntawv lim lossis daim nyias nyias. Qhov no tuaj yeem tshem tawm impurities, hais, thiab cov kab mob ntawm cov kua lossis roj.

Hauv kev lag luam ntawm cov khoom sib nqus, cov khoom pom tau ua lub luag haujlwm tseem ceeb hauv kev ua kom cov purity thiab zoo ntawm cov khoom sib nqus. Magnetic filtration siv cov hlau nplaum sib nqus kom nyiam thiab tshem tawm cov khoom ferrous los ntawm cov kua dej, xws li cov roj lossis cov dej txias. Qhov no tuaj yeem tiv thaiv kev puas tsuaj rau cov tshuab thiab txhim kho kev ua haujlwm ntawm cov txheej txheem kev lag luam.

Ntawm peb lub tuam txhab, peb tshwj xeeb hauv kev tsim cov khoom siv hlau nplaum zoo rau ntau yam kev siv. Peb cov ntxaij lim dej yog tsim los muab kev ua tau zoo, ua haujlwm ntev, thiab siv tau yooj yim. Peb muab ntau qhov ntau thiab tsawg, cov ntaub ntawv, thiab kev teeb tsa kom tau raws li cov kev xav tau tshwj xeeb ntawm peb cov neeg siv khoom.