Kev Taw Qhia
Qhov no yog ib qho ntse, yooj yim ua haujlwm thiab siab spectrophotometer.
Cov koob no muaj nyob rau hauv cov qauv hauv qab no YYDS-23D YYDS-25D YYDS-26D
Kev Rov Ua Dua Qhov Tseeb dE * ab ≤ 0.02
Inter-Instrument Daim Ntawv Pom Zoo dE*ab≤0.25