Kungani isidlo se-petri kufanele sihlaselwe lapho siklanyelwe epuletini?

Esikolweni sePlate, isidlo se-petri kumele siguqulwe sibheke phansi, ikakhulukazi ngenxa yezizathu ezilandelayo

1. Ukugwema ukungcoliswa

Lapho isidlo sesiko siqondile, amanzi avele kusuka kumasiko aphakathi nendawo azogobhoza esitsheni futhi angadala ukuthi amagciwane abuyele ebusweni besiko eliphakathi nendawo, abangela ukungcoliswa kanye nokuthinta imiphumela yesiko.

Lapho isidlo sesiko sejika sibheke phezulu, ama-condense avele ngokusobala ngokulinganayo ebusweni bamasiko aphakathi, kanye nokuhwamuka kanye nokuvuselelwa kwenani eliphakathi komunye nomunye, okungaphazamisi imiphumela yesiko. Njengoba umoya epuletini awunakugeleza kalula, ukutheleleka ngegciwane langaphandle kuncishiswa ngangokunokwenzeka nokungcoliswa kwama-medium namasiko aphakathi kwama-bacteriya avinjelwe.

2. Ukufinyelela okulula

Njengoba isidlo se-petri sinesembozo esikhulu nesizansi esincane, kulula ukuphakamisa kuphela isembozo lapho sisusa isidlo se-petri, siveza isiko eliphakathi emoyeni, sidale isidlo se-petri. Ipuleti elihlangene lingagcina ukwakheka kwalo kwasekuqaleni lapho lisuswa, futhi akulula ukuhlukanisa phansi kanye nesembozo sepuleti, ukugwema ukungcoliswa kwamagciwane emvelweni.

3. Yehlisa ukuhwamuka

Ku-incubator ephoqiwe ephoqelelwe, ukunqamula isidlo sesiko kunganciphisa ukuhamba komoya ebusweni be-medium, kunciphise izinga lokuhwamuka kwamanzi, futhi uqinisekise ukuthi i-anid ayiphazamisi kalula futhi ayithinti ukukhula kwama-microorganisms. Izitsha ze-petri ezine zilungele ukukhula kwamagciwane nokuphindaphindeka.

4. Kulula ukubona

Ukubuyisa isidlo se-petri kuvumela ukusakazeka kwamakoloni ukuthi kulawulwe ngezinga elithile, elikhuthaza ukwakheka kwamakholoni ngamanye futhi okwenza ukubonwa nokubala kube lula.

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