Video: Dab tsi xim yog phenol liab nyob rau hauv ib qho kev daws teeb meem?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Phenol liab yog cov kua qaub-puag qhia. Nws yog tsim los ntawm condensing ob moles ntawm phenol nrog ib tug mole ntawm o-sulfobenzoic acid anhydride. Phenol Liab yog siv los ua ib qho pH qhia hauv cell culture applications. Kev daws ntawm phenol liab yuav muaj a xim daj ntawm a pH ntawm 6.4 lossis qis dua thiab xim liab ntawm a pH …
Khaws qhov no hauv kev xav, dab tsi xim yog phenol liab hauv cov kua qaub?
Phenol liab yog ib ph qhia tias yuav yog txiv kab ntxwv ntawm. Phenol liab yog ib pH qhia tias yuav yog txiv kab ntxwv ntawm nruab nrab pH ; daj nyob rau hauv acidic ib puag ncig thiab tsaus liab nyob rau hauv ib puag ncig yooj yim.
Qhov thib ob, phenol red test yog dab tsi? Phenol Liab Broth yog ib tug general-purpose sib txawv xeem nruab nrab feem ntau yog siv los sib txawv gram negative enteric kab mob. Nws muaj peptone, phenol liab (ib pH qhia), ib lub raj Durham, thiab ib qho carbohydrate. Phenol liab yog lub ntsuas pH uas hloov daj hauv qab pH ntawm 6.8 thiab fuchsia saum pH ntawm 7.4.
Tom qab ntawd, nws txhais li cas thaum phenol liab tig daj?
Phenol liab yog pH qhov taw qhia uas yog daj ntawm pH hauv qab 6.8 thiab liab ntawm pH saum toj no 7.4 nrog sib txawv ntxoov los ntawm daj rau liab nruab nrab ntawm cov qib pH. Yog tias qhov ntsuas tau tig daj hauv lub raj mis no txhais tau tias Nws tau dhau los ua paug nrog qee yam uas ua rau pH ntau acidic thiab coj pH qis dua 6.8.
Koj ua li cas phenol liab?
Npaj phenol liab , siv 0.02% aqueous tov yog tias phenol liab muaj los yog haus cawv yog tias phenol liab , sodium ntsev yog muaj. Rau cov tshuaj aqueous, ntxiv 0.02 g ntawm phenol liab rau 75 ml ntawm DI dej. Dilute mus rau qhov kawg ntim 100 ml nrog DI dej.
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