Kev faib tawm ntawm pH ntsuas thiab acidity ntsuas
Raws li kev xav tau ntawm kev tsim khoom thiab lub neej, tib neeg tau tshawb fawb thiab tsim ntau cov qauv ntawm pH thiab acidity meters:
1. Raws li kev ntsuas qhov tseeb, nws tuaj yeem muab faib ua 0.2 qib pH meter, 0.1 qib pH meter, acidity meter, 0.01 qib pH meter, acidity meter los yog siab dua precision pH meter, acidity meter
2. Raws li qhov ntim ntawm qhov ntsuas, muaj cov cwj mem pH meters, acidity meters (mini pH meters, acidity meters), portable pH meters, acid-base meters, thiab desktop pH meters,
3. Online pH meter thiab acidity meter nrog kev soj ntsuam tas li thiab ntsuas.
4. Raws li cov kev cai rau kev siv: cwj mem hom pH meter, acidity meter (mini pH meter), thiab portable pH meter. Acidity meter feem ntau yog coj mus rau qhov chaw kuaj los ntawm cov neeg ua haujlwm kuaj.
5. Xaiv lub ntsuas pH. Qhov tseeb theem ntawm acidity meter yog txiav txim siab raws li qhov tseeb uas tus neeg siv yuav tsum tau ntsuas, thiab tom qab ntawd xaiv pH meters ntawm ntau cov duab rau cov neeg siv yooj yim.
Kev khaws cia thiab tu txoj hauv kev rau pH meter electrodes
Cov electrode ntawm pH meter (acidity meter) yuav tsum khaws cia raws li hauv qab no:
Thov khaws cov electrode hauv 3mol/L potassium chloride tov (3M KCl) thaum tsis siv; tuaj yeem khaws cia hauv pH 7.00 tsis nyob rau lub sijhawm luv luv. Kev ziab los yog soaking pH meter electrode hauv dej distilled ntev yuav ua rau nws lub neej ua haujlwm luv.
PH meter (acidity meter) electrode txij nkawm txoj kev:
Yog tias txoj kab nqes ntawm pH meter electrode txo qis los yog cov lus teb ceev qeeb tom qab siv lub sijhawm, cov hauv qab no tuaj yeem sim.
1. Yog tias cov qauv ntsuas muaj cov protein, cov electrode membrane tuaj yeem ntxuav nrog gastric protease/hydrochloric acid ntxuav (ME51340068).
2. Yog tias cov qauv ntsuas yog oily/organic kua, nws tuaj yeem yaug nrog acetone lossis ethanol.
3. Yog hais tias lub pH meter (acidity meter) electrode kua complex ua qias neeg thiab dub, lub complex tuaj yeem ntxuav nrog thiol ntxuav kua (ME5134070).
4. Ua kom cov electrode membrane.
nyob
Txoj kev siv tshuaj: Soak lub pH meter (acidity meter) electrode regeneration solution (ME5134073) rau 30 vib nas this, ces tsau hauv 3mol / L KCl tov rau 5 teev
