Cov qib ntawm cov tshuaj lom neeg tshuaj lom neeg

一. Keeb kwm ntawm tshuaj lom neeg cov tshuaj tiv thaiv tshuaj lom neeg: Vim li cas muaj qib?

Tub Ntxhais Logic:Kev coj dawb huv thiab kev tswj hwm tsis ncaj ncees cuam tshuam rau kev ua tiav lossis tsis ua tiav ntawm kev sim

Kev lag luam kev hloov nce qib kev txhim kho:Kev lag luam tshuaj lom tau raug tawg nyob rau hauv 19th caug xyoo, thiab cov kev xav tau ntawm lub chaw soj nstuam rau reagents diverged. Piv txwv li, hluavtaws hluavtaws yuav tsum tswj hwm cov hlau impurities, thiab tshuaj yuav tsum tau txwv cov tshuaj lom neeg lom zem.

Yuam Kev Claw Kev Ua Haujlwm:Impurities nyob rau hauv reagents yuav cuam tshuam kev sim los ntawm "kev ua haujlwm ua kom zoo tshaj plaws". Piv txwv li, 0.1% ntawm dej yuav ua rau muaj txiaj ntsig zoo tshaj li 5% thaum ntsuas dej los ntawm Karl Fischer txoj kev.

Kev lag luam hauv tsab cai:Tus nqi siab ntawm siab - Purity reagents tej zaum yuav yog ntau tshaj 10 zaug siab dua li ntawm cov tshuaj tivthaiv. Kev xaiv tsim nyog tuaj yeem txo cov nyiaj tshawb fawb los ntawm 30% ~ 50%.

2. Hauv {-} qhov tob ntawm cov tshuaj lom neeg cov tshuaj lom neeg

1. Thawj reagent (PT)

Cim xim:Tsaus ntsuab

Theem haujlwm:Thawj cov reagent yog "King" ntawm reagents, muaj kev coj dawb huv, feem ntau ncav cuag ntau tshaj 99.95%. Nws cov ncauj lus impurity yog tsawg heev thiab nws cov ruaj khov yog qhov zoo heev. Nws lays meej lub hauv paus rau tag nrho cov kev sim, thiab nws qhov tseeb tau cuam tshuam rau kev ntseeg tau cov txiaj ntsig kev sim ua tom ntej.

Cov Kev Siv Raug:Siv los ncaj qha npaj cov kev daws teeb meem txheem lossis ntsuas qhov kev xav ntawm lwm cov kev daws teeb meem, thiab lwm yam.

2. Lav tau hais tias reagent (gr)

Cim xim:Tsaus ntsuab

Theem haujlwm:Lub purity ntawm guaranteed reagents kuj tseem siab heev, feem ntau ncav ntau tshaj 99.8%. Hom reagent no muaj cov ntsiab lus tsis huv thiab tau siv dav hauv kev tshawb fawb. Nyob rau hauv high -}}}}}}}}} instrument endment tshuaj ntsuam kev sim, reagents yog thawj qhov kev xaiv rau cov kws tshawb fawb.

Cov Kev Siv Raug:Kev kuaj pom ntawm PPB -} muaj cov roj hauv atomic nqus spectroscopy (AAS), thiab lwm yam), thiab lwm yam.

3. Kev tshuaj ntsuam (AR)

Cim xim:Golden Liab

Theem haujlwm:Kev tshawb xyuas cov tshuaj tiv thaiv yog qhov muaj ntau tshaj plaws hauv chaw soj nstuam, nrog kev coj dawb huv ntawm txog 99.7%. Lawv tuaj yeem ua tau raws li qhov xav tau ntawm feem ntau cov kev ntsuas tshuaj ntsuam xyuas cov tshuaj lom zem tshaj plaws. Txawm hais tias nws yog General cov kev txheeb xyuas zoo lossis lub tsev pheeb suab, xim ua haujlwm thiab lwm cov kev txawj ntse tuaj yeem ua rau lawv cov kev txawj ntse thiab yog thawj qhov kev xaiv rau tus nqi- ua hauj lwm zoo.

Cov Kev Siv Raug:Kev ua ntu ntawm lub tsev kawm ntawv qib siab (xws li cov kua qaub - Cov kev sim ua haujlwm), thiab lwm yam.

4. Tshuaj Ntshiab (CP)

Cim xim:Nruab Nrab Xiav

Theem haujlwm:Tshuaj siv tshuaj ntshiab muaj qhov qis dua kev coj dawb huv, feem ntau nyob ib puag ncig 99.5%. Txawm hais tias lub purity tsis yog siab li cov hom dhau los, kev sim ua chiv keeb yog muaj peev xwm npaj tau siab, xws li khoom siv yooj yim, thiab lwm yam.

Cov Kev Siv Raug:Bisphenol siv nyob rau hauv kev npaj ntawm kev lag luam eptthetic epoxy resins, theem nrab tsev kawm ntawv kev sim, thiab lwm yam.

5. Kuaj Reavent (LR)

Cim xim:xim daj

Theem haujlwm:The purity of laboratory reagents is relatively low, and they are mainly used in some experiments that do not require high purity, such as general cleaning, auxiliary experimental steps, etc. Laboratory reagents can play their role in some simple testing links in industrial production, or in large-scale, low-cost experimental demonstrations in school laboratories.

Cov Kev Siv Raug:Kev kuaj cov tshuaj lom, ntsuas ntev ua ntej ntev ntawm cov dej ua kom zoo hauv cov teeb meem, thiab lwm yam.