Cov kev cai thiab cov qauv rau cov khoom noj-qib mica hmoov tuaj yeem xa mus rau cov hauv qab no: Cov kev cai huv huv: Cov zaub mov-qib mica hmoov yuav tsum muaj purity siab, tsis muaj impurities thiab kab mob kab mob, thiab yuav tsum tsis txhob muaj cov hlau hnyav, tshuaj lom thiab lwm yam teeb meem. tshuaj. Particle loj yuav tsum tau: Khoom noj khoom haus-qib mica hmoov yuav tsum muaj ib tug sib xws particle loj, feem ntau nyob rau hauv ib tug tej yam ntau yam, los xyuas kom meej solubility thiab stability thaum siv. Cov xim yuav tsum muaj: Cov khoom noj-qib mica hmoov yuav tsum muaj cov xim tsim nyog, feem ntau tsis muaj xim lossis dawb me ntsis, thiab yuav tsum tsis txhob muaj cov xim dawb lossis xim sib txawv. Cov ntxhiab tsw thiab tsw yuav tsum tau: Cov zaub mov-qib mica hmoov yuav tsum tsis txhob muaj cov ntxhiab tsw zoo, thiab yuav tsum tsis muaj ntxhiab lossis tsuas yog muaj ntxhiab tsw. Kev ntim khoom: Cov khoom noj-qib mica hmoov yuav tsum siv cov khoom ntim khoom noj kom paub meej cov khoom huv thiab nyab xeeb. Txhawm rau ua kom tiav, cov kev cai tseem ceeb rau cov khoom noj-qib mica hmoov muaj xws li purity, granularity, xim, tsw thiab ntim. Cov kev cai tshwj xeeb thiab cov qauv yuav txawv raws li cov cai hauv tebchaws lossis cheeb tsam thiab cov qauv. Nws raug nquahu kom kuaj xyuas cov ntawv pov thawj cuam tshuam thiab cov ntaub ntawv sau npe ntawm cov khoom thaum yuav khoom.