Koj puas tuaj yeem ua kom sov lub tog raj kheej kawm tiav?
Koj puas tuaj yeem ua kom sov lub tog raj kheej kawm tiav?

Video: Koj puas tuaj yeem ua kom sov lub tog raj kheej kawm tiav?

Video: Koj puas tuaj yeem ua kom sov lub tog raj kheej kawm tiav?
Video: pua yog tim tub aib pog ntawv by paj vuam thoj sonie thoj zoo siab yaj nkauj tawm tshiab 2022 2024, Kaum ib hlis
Anonim

Tau kawm tiav lub tog raj kheej ua cua sov ? Yog, txawm tias cov qauv iav, uas yog ua los ntawm borosilicate iav, ua tau noj ntau dua kub dua li cov yas lub tog raj kheej . Borosilicate iav cylinders tau tiv taus qhov kub ntawm 329 ° F (165 ° C) thiab tseem tiv taus thermal shock.

Kuj nug, koj puas tuaj yeem ua kom sov lub khob?

Feem ntau lab iav tawg vim yog thermal shock - ob lub khob kub nrog dej txias lossis iav txias nrog dej kub. Txawm li cas los xij, yog tias koj ua cua sov tus khob dej tsis tu ncua rau 40 feeb, nws twv yuav raug hu tsis xav tsis thoob rau kev tawg. Koj yuav tsum tau boil qias neeg beakers txhua hnub tsis muaj lawv popping rau koj.

Qhov thib ob, qhov txawv ntawm lub beaker thiab lub tog raj kheej kawm tiav yog dab tsi? Cov Qhov txawv ntawm ib tug Beaker & ib Kawm tiav lub tog raj kheej . Ob leeg kawm tiav cylinders thiab beakers yog cov khoom kuaj iav uas muaj cov haujlwm tshwj xeeb. Kawm tiav cylinders feem ntau yog qhov tseeb dua ntawm kev nyeem cov ntim ntawm cov kua sab hauv. Beakers yog zoo dua rau nplawm thiab sib tov kua.

Tom qab ntawd, ib tug kuj yuav nug, yuav ua li cas yog ib tug kawm tiav lub tog raj kheej?

Cov qhov tseeb specification ntawm kawm tiav cylinders yog coj los ua ib feem pua ntawm tag nrho cov nplai, uas yog, ntim ntawm cov kab sau saum toj kawg nkaus. Rau chav kawm B kawm tiav cylinders , cov hais qhov tseeb ntawm 1% txhais tau tias 100ml lub tog raj kheej thaum sau kom raug yuav raug mus txog 100 ± 1ml.

Koj puas tuaj yeem boil dej hauv Pyrex beakers?

Txawm tias kim borosilicate kuaj iav yuav feem ntau tawg yog tias koj nug nws ua ntau dhau, zoo li cov kua txias rau bunsen burner. Koj yuav tej zaum tau nrog boil kua rau hauv chav tsev kub pyrex (los yog tsawg kawg koj ua tau ob peb xyoos dhau los) tab sis qhov cub, roj lossis hluav taws xob, kub ntau dua boiling dej.

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