Txoj kev kho thiab txiav txim siab qhov ntsuas qhov ntsuas ntawm lub refractometer
1. Kev hloov kho xoom
Nqa dej distilled thiab muab tso rau ntawm qhov ntsuas prism rau kev nyeem ntawv. Yog tias tus ciam xiav dawb tsis nyob ntawm qhov cim xoom, tig qhov kev hloov kho kom txog rau thaum tus ciam teb nyob ntawm qhov cim xoom.
2. Txiav txim siab qhov ntsuas qhov taw qhia
Npaj ib lub khob ntsuas nrog ib qho concentration ntawm cov tshuaj yuav tsum tau kuaj, xws li 10 feem pua; Nyeem qhov kev nyeem ntawv ntawm lub refractometer, xws li 5 feem pua, thiab qhov ntsuas qhov taw qhia yog 10/5=2.
3. Txheeb xyuas qhov ntsuas qhov ntsuas tsis pom tseeb
Txuas ntxiv mus npaj lwm qhov kev daws teeb meem los sim nrog lub khob ntsuas, xws li 6 feem pua; Nyeem cov refractometer nyeem ntawv, xws li 3 feem pua, los ua pov thawj tias qhov ntsuas qhov ntsuas tsis raug.
Kev siv:
1. Qhib lub prism, ntxuav lub ntsej muag daim iav nrog cov ntawv so, tso cov kua me me los kuaj rau ntawm daim iav saum npoo, thiab ua kom nws npog tag nrho daim iav saum npoo. Kaw lub prism.
2. Kho lub reflector 7 kom ncav cuag qhov tsim nyog rau qhov teeb meem teeb pom kev zoo, tom qab ntawd tig lub prism kom lub qhov muag pom ib nrab ci thiab ib nrab tsaus nti, nrog rau txoj kab sib faib nyob ntawm qhov kev sib tshuam ntawm crosshairs. Lub sijhawm no, qhov ntsuas qhov ntsuas ntawm cov kua tuaj yeem nyeem tau ntawm qhov ntsuas los ntawm lub iav magnifying 2.
Yog hais tias lub teeb xim muaj xim tshwm, kho lub achromatic compensator kom lub teeb xim xim ploj mus thiab lub teeb tsaus nti interface pom tseeb.
Tom qab kev ntsuas tiav, qhib lub prism thiab ntxuav daim iav saum npoo nrog acetone. Xwb, siv lub pob pob ntseg los tshuab kom qhuav daim iav saum npoo. Tom qab qhov kev sim ua tiav, ntxiv rau kev ntxuav daim iav saum npoo, nws yog ib qho tsim nyog yuav tsum tau clamp ob txheej ntawm daim iav daim ntawv kom nruj lub kaw screws ntawm ob lub prisms kom tiv thaiv kev puas tsuaj rau daim iav nto.
