Ukucoca izitya zakwaPetriyinkqubo edinayo, kodwa le nkqubo ingenza imifuniselo isebenze ngakumbi.Ukuba isitya se-petri asicocwanga, umfunisi kufuneka achithe ixesha elingakumbi eqhuba idatha yovavanyo.Kwaye ukuba isitya se-petri sicocwe ngokucokisekileyo, umfunisi angenza uvavanyo ngokufanelekileyo.
Ukucoca izitya zePetri ngezandla:
Ngokubanzi, ihamba ngamanyathelo amane okucwina, ukukhuhla, ukukha, kunye nokucoca.
1. Ukufunxwa: Iiglasi ezitsha okanye ezisetyenzisiweyo kufuneka zifakwe emanzini kuqala ukuze zithambe kwaye zinyibilikise izinto ezincamatheleyo.I-glassware entsha kufuneka ihlanjwe ngokulula ngamanzi ompompo ngaphambi kokusetyenziswa, kwaye emva koko ifakwe ubusuku bonke kwi-5% ye-hydrochloric acid;i-glassware esetyenzisiweyo ihlala ineprotheni eninzi kunye neoli eqhotyoshelwe kuyo, okungekho lula ukuyihlamba emva kokumisa, ngoko kufuneka ifakwe emanzini acocekileyo ngokukhawuleza emva kokusetyenziswa ukuxubha.
2. Ukukhuhla: Beka i-glassware efakwe emanzini okucoca kwaye uyikhuhle ngokuphindaphindiweyo ngebrashi ethambileyo.Musa ukushiya indawo efileyo kwaye uthintele umonakalo ekugqityweni komphezulu weempahla.Geza kwaye uyomise i-glassware ecocekileyo yokukhetha.
3. I-Pickling: I-Pickling kukucwina izixhobo ezikhankanywe ngasentla kwisisombululo sokucoca, ekwaziwa ngokuba yisisombululo se-asidi, ukususa izinto eziseleyo ezinokwenzeka kumphezulu wezixhobo ngokusebenzisa i-oxidation eqinile yesisombululo se-asidi.Ukuvunwa kufuneka kungabi ngaphantsi kweeyure ezintandathu, ngokuqhelekileyo ubusuku okanye ngaphezulu.Zilumkele iimpahla.
4. Hlanza: Izinto ezisetyenziswayo emva kokukhuhla kunye nokucolwa kufuneka zihlanjwe ngokupheleleyo ngamanzi.Nokuba izitya zihlanjululwe zicocekile emva kokuchola kuchaphazela ngqo impumelelo okanye ukungaphumeleli kwenkcubeko yeseli.Ukuhlamba izandla izitya emva kokukhetha, kwaye isitya ngasinye kufuneka siphindwe ngokuphindaphindiweyo "amanzi-agcwele-amanzi" ubuncinane amaxesha angama-15, kwaye ekugqibeleni afakwe emanzini aphindwe kabini-amaxesha angama-2-3, omisiwe okanye omisiwe, kwaye apakishwe ukuze asetyenziswe kamva.

Indlela yokucoca yokusebenzisa i-XPZIwasha yeglasi yelabhoratriukucoca isitya se-petri:
Ubuninzi bokucoca: izitya ze-petri eziyi-168 zinokucocwa kwibhetshi enye
Ixesha lokucoca: imizuzu engama-40 ukugqiba ukucoca
Inkqubo yokucoca: 1. Beka isitya se-petri esiza kucocwa (esi sitsha sinokufakwa ngqo kwiwasha yebhotile, kwaye isitya sepetri esinesiko lenkcubeko kufuneka sigalele iqhekeza elikhulu lenkcubeko yenkcubeko kangangoko kunokwenzeka) kwingobozi ehambelanayo. yewasha yeebhotile.Umaleko omnye unokucoca izitya zepetri ezingama-56, kwaye ngelinye ixesha unokucoca izitya zepetri eziyi-168 ezinomaleko-ntathu.
2. Vala umnyango wokuhlamba iibhotile, khetha inkqubo yokucoca, kwaye umatshini uya kuqala ukucoca ngokuzenzekelayo.Inkqubo yokucoca ibandakanya ukucocwa kwangaphambili - ukuhlamba okuphambili kwe-alkali - i-asidi neutralization - ukuhlanjululwa kwamanzi acocekileyo.
3. Emva kokucoca, ucango lomatshini wokuhlamba iibhotile luyazivula ngokuzenzekelayo, lukhuphe isitya senkcubeko esicociweyo, kwaye siye kwisixhobo sokuvala inzala.
Ukucocwa kwezitya zepetri kwiilabhoratri zebhayoloji yinxalenye ebaluleke kakhulu yolawulo lwebhubhoratri.Ukusebenzisa umatshini wokuhlamba iibhotile ozenzekela ngokupheleleyo endaweni yokucoca ngesandla kunokuthintela ukungcoliseka okunqamlezileyo ekuchaphazeleni idatha yovavanyo, ukukhusela impilo yabasebenzi bovavanyo, kunye nokuphucula ukusebenza kakuhle kovavanyo.