Kev siv Burette Stopcock
Tso lus
Lub raj raj yog ib qho cuab yeej ntsuas kom raug thiab tso tawm cov kua ntim, uas yog ntsuas (EX) iav meter.
Raws li nws cov ntim sib txawv, nws tau muab faib ua qhov tsis tu ncua, semi-tray thiab trace tube. Feem ntau siv nyob rau hauv tas li titration raj yog titration raj ntawm 50ml (20 degree C), thiab nws qhov txawv (1 daim phiaj me me) yog {{10}} .1ml, thiab kev nyeem ntawv tuaj yeem kwv yees yog 0 01ml. Tsis tas li ntawd, muaj 100ml thiab 25ml tas li lub npe, uas kuj yog 0.1ml. Lub raj nrog lub ntim ntawm 10ml thiab ib teev ntawm 0.05ml yog hu ua semi-micro raj. Trace tube raj yog lub raj titration siv rau cov kua ntim me me. Muaj ntau yam specifications (1 ~ 5) ML, thiab cov ntsiab lus tus nqi yog 0.01ml los yog 0.02ml.
Lub raj xa dej tau muab faib ua cov npe acid thiab cov npe alkaline raws li nws lub hom phiaj. Lub raj xa dej acidic yog tsim rau cov kua qaub thiab oxidized, uas tsis haum rau cov tshuaj alkaline. Nws yog ib qho nyuaj rau tig vim lub iav piston yog yooj yim corroded los ntawm alkaline tov. Lub alkaline raj raj yog tsim rau alkaline daws thiab anaerobic daws. Lub qhov ncauj qis ntawm cov kua qaub titration raj piston thiab lub tsho tiv no thiab lub alkaline titration raj yuav tsum muaj tib tus lej sib koom ua ke raws li lub iav taw qhia lub raj kom tiv thaiv qhov chaw tsis raug. Qee qhov kev daws teeb meem (xws li potassium permanganate, iodine, nyiaj nitrate thiab lwm yam kev daws teeb meem xws li potassium permanganate, iodine, nyiaj nitrate thiab lwm yam kev daws) tsis tuaj yeem siv. Thaum cov kua qaub raj tsis siv rau lub sijhawm ntev, qhov chaw piston yuav tsum muab tso rau hauv daim ntawv. Thaum lub alkaline-type drip raj tsis siv, lub raj roj hmab yuav tsum tau rub tawm.