Video: Vim li cas thiaj yuav tsum petri cov tais diav uas muaj cov xov xwm hloov pauv?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
A Petri tais (phaj) nrog "Khoom" kab lis kev cai xov xwm yog khaws cia rau hauv ib qho rov qab txoj hauj lwm ( upside down ) thaum lub sijhawm tsim kom cov dej sib xyaw ua ke yuav tsis poob rau ntawm agar nto (vim tias cov tee dej yog cov peev txheej muaj peev xwm kis tau).
Ua li no, dab tsi yog ob yam laj thawj uas yog vim li cas nws thiaj tseem ceeb kom thim cov phaj petri thaum tsim tawm?
Inverting lub petri tais ua rau nws nyuaj rau cov kab mob nkag mus rau qhov nruab nrab loj hlob. Thaum nyob hauv tus tsim tawm loj hlob kab lis kev cai, Petri tais diav yog inverted vim noo noo ua rau ntawm lub hau thiab yuav poob qis mus rau agar/kev loj hlob nruab nrab ua rau muaj teeb meem dej noo.
Tom qab ntawd, lo lus nug yog, yuav ua li cas kom tsis txhob condensation ntawm petri tais diav? Qhov zoo tshaj plaws kuv muaj yog ncuav kub thiab ntim koj tais diav 15 lossis siab dua thaum nchuav. Cov cua sov ntxiv rau lub hau tsim hauv qab ntawm qhov tshiab tais yuav khaws cov hws los ntawm kev tsim thiab tseem pab thawb qee qhov cua nkag los ntawm cov av tais . Cia lawv txias tag rau hauv pawg.
Ntxiv mus, vim li cas peb thiaj tsim cov tais diav Petri ntxeev?
5 Cov phaj yog incubated upside down (agar up), yog li ntawd condensation ua tsis drip rau lub phaj thiab cuam tshuam nrog kev tsim microbes.
Vim li cas cov tais diav petri tau sau rau hauv qab?
Lub hau ntawm Petri tais diav tej zaum yuav muaj cov kab mob sib kis uas kis rau hauv xov xwm thiab loj hlob nrog cov qauv kab mob me me. Peb daim ntawv lo cov Petri tais diav ntawm hauv qab ib feem vim tias lub hau yuav pauv nrog lwm tus Petri tais diav tsim tsis meej pem thiab inverted txoj hauj lwm ua rau nws yooj yim los nyeem cov daim ntawv lo ntawm Petriplates.
Pom zoo:
Kuv tuaj yeem siv dab tsi hloov cov tais diav petri?
Txawm hais tias agar yog cov phaj petri nyiam, lwm cov khoom xyaw xws li gelatin tuaj yeem siv thaum tsis muaj agar. Koj tuaj yeem ua koj tus kheej hloov daim ntawv tais diav hauv tsev tawm ntawm cov khoom xyaw hauv chav ua noj. Ntxuav koj txhais tes, koj lub txee thiab txhua yam tais diav uas koj yuav siv kom huv
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