Crystal Purity Test Methods (Nqa Quartz ua piv txwv):
Kev soj ntsuam pom: High-purity crystal (xws li SiO₂ Ntau dua lossis sib npaug li 99.9%) yog pob tshab thiab tsis muaj impurities; qis dua -qib crystals muaj npuas lossis tawg.
Cov cuab yeej:
X-ray Diffraction (XRD): Kev ntsuam xyuas ntau ntawm cov ntxhia muaj pes tsawg leeg (yuam kev ± 0.5%).
FTIR Infrared Spectroscopy: Tshawb xyuas impurities xws li hydroxyl pawg (piv txwv li, OH⁻ cov ntsiab lus <10 ppm hauv cov khoom siv hluavtaws).
Txoj kev ceev: Ntshiab crystal ntom yog 2.65 g / cm³; qhov sib txawv> 0.02 g / cm³ qhia tias muaj impurities.
Piv txwv li: Lub purity ntawm fused quartz tuaj yeem ncav cuag 99.99%, thaum lub ntuj siv lead ua feem ntau yog 99.5% -99.9%.
