Nyob rau hauv lub ntiaj teb meej ntawm kev sim kev sim, kev paub txog kev nyeem ntawv burette kom raug yog qhov tseem ceeb. Burettes yog cov cuab yeej tseem ceeb hauv kev tsom xam volumetric, tshwj xeeb tshaj yog nyob rau hauv titrations, qhov twg lawv ntsuas qhov ntim ntawm cov kua nrog siab precision. Phau ntawv qhia no muab txoj hauv kev rau kev nyeem ntawv burette, kom ntseeg tau qhov tseeb thiab kev ntseeg siab hauv koj qhov kev ntsuas ntsuas.
Lub burette yog dab tsi?
Ib tug burette yog ib tug ntev, cylindrical daim iav, cim nrog ib tug nplai, thiab nruab nrog ib tug kais nyob rau hauv qab. Nws yog tsim los dispense paub ntim ntawm cov kua, tshwj xeeb tshaj yog nyob rau hauv titrations. Kev nyeem ntawv tseeb ntawm burette qhov ntsuas yog qhov tseem ceeb rau kev ua tiav ntawm kev ntsuas ntsuas.
Yuav ua li cas nyeem ib tug buret?
Art of Reading the Meniscus
Lub meniscus yog qhov nkhaus ntawm cov kua hauv lub burette. Rau kev nyeem ntawv tseeb:
Qhov muag Theem: Xyuas kom koj lub qhov muag yog theem nrog lub meniscus kom tsis txhob muaj qhov yuam kev parallax.
Nruab nrab ntawm Meniscus: Rau cov kua ntshiab, nyeem hauv qab ntawm lub meniscus. Rau cov kua dej opaque, kho cov kua dej saum toj kawg nkaus nrog lub ntsuas ntsuas.
Kev Siv Cov Kev Pab: Daim npav dawb nrog cov kab dub tom qab lub burette tuaj yeem txhim kho kev pom thiab raug.
Cov kauj ruam rau qhov tseeb Burette siv
Ntxuav: Pib nrog lub burette huv kom tsis txhob muaj kab mob. Yaug nws nrog cov tshuaj kom siv.
Filling: Sau cov burette saum toj kawg nkaus lub cim xoom, kom ntseeg tau tias tsis muaj cua npuas.
Initial Volume: Sau lub ntim pib, ua kom koj lub qhov muag nrog lub meniscus.
Ua Titration: Ua tib zoo tso cov kua, saib qhov kev hloov pauv hauv ntim.
Thaum kawg Volume: Nco ntsoov lub ntim kawg ntawm qhov kawg ntawm qhov titration, dua ntawm qhov muag nrog lub meniscus.
Volume Calculation: Qhov sib txawv ntawm qhov pib thiab qhov kawg ntim muab lub ntim ntim.
Electronic Burettes: Niaj hnub nimno Twist
Electronic burettes muab cov ntawv nyeem digital, tshem tawm qhov xav tau ntawm phau ntawv txhais lus meniscus thiab txhim kho qhov tseeb.
Quality Glassware los ntawm WUBOLAB
Thaum nws los txog rau kev ua cov kev sim kuaj xyuas meej, qhov zoo ntawm iav tsis tuaj yeem overstated. WUBOLAB, tus thawj coj Laboratory glassware chaw tsim tshuaj paus, yog koj mus-rau qhov chaw rau cov khoom siv iav zoo tshaj plaws. Peb cov khoom siv dav dav suav nrog iav beakers, lag luam wholesale iav fwj, boiling flasks, thiab laboratory funnels nyob rau hauv ntau qhov ntau thiab tsawg thiab hom, kom ntseeg tau tias koj tuaj yeem nrhiav cov iav zoo meej rau koj qhov kev xav tau hauv chav kuaj. Txawm hais tias koj tab tom ntsuas nrog lub burette lossis ua lwm cov txheej txheem kuaj, WUBOLAB lub khob iav sawv rau qhov tseeb thiab kev ntseeg tau.
Feem ntau yuam kev thiab kev daws teeb meem
Qib qhov muag tsis raug: Ib txwm nyeem ntawm qib meniscus.
Kev Tu Tsis Zoo: Siv cov tshuaj uas koj yuav ntsuas rau kev yaug.
Misreading the Scale: Paub koj tus kheej nrog cov nplai thiab cov cim.
FAQ
Q: Koj ua li cas kom ntseeg tau qhov tseeb ntawm kev nyeem ntawv burette?
A: Qhov tseeb yog los ntawm kev tu kom zoo, kho qhov muag kom raug, thiab ceev faj nyeem cov meniscus.
Q: Txoj kev nyeem ntawv los yog siv burette yog dab tsi?
A: Txoj kev raug suav nrog kev nyeem cov meniscus ntawm qhov muag thiab sau qhov ntim thawj zaug thiab zaum kawg.
Q: Yuav ua li cas yog Burets?
A: Burets yog qhov tseeb heev, nrog qee qhov muaj peev xwm ntsuas txog 0.05 mL.
Q: Yuav ua li cas koj yuav tsum ua raws li ib tug buret kom paub tseeb hais tias nyob rau hauv nws cov kev nyeem ntawm kev daws?
A: Saib xyuas lub buret ntawm qhov muag, kom ntseeg tau tias lub meniscus dlhos qhov tseeb nrog lub ntsuas ntsuas.
