Kwilabhoratri, izigqibo ezinzima ziyenziwa rhoqo ukumisela eyona ndlela ilungileyo yokuqhuba imifuniselo novavanyo olubalulekileyo.Ngokuhamba kwexesha, iingcebiso ze-pipette zilungelelanise ukuba zilungele iilebhu kwihlabathi liphela kwaye zibonelela ngezixhobo ukuze amagcisa kunye noososayensi babe nako ukwenza uphando olubalulekileyo.Oku kuyinyani ngakumbi njengoko i-COVID-19 iqhubeka ukusasazeka kulo lonke elase-United States.Iingcali ze-Epidemiologists kunye nee-virologists zisebenza ubusuku nemini ukuza nonyango lwentsholongwane.Iingcebiso ezihluziweyo zepipette ezenziwe ngeeplastiki zisetyenziselwa ukufunda intsholongwane kunye ne-bulky, i-glass pipettes ngoku i-sleek kwaye i-automated.Iingcebiso ezili-10 zeplastiki zepipetti zisetyenziselwa ukwenza uvavanyo olunye lwe-COVID-19 ngoku kwaye uninzi lweengcebiso ezisetyenziswayo ngoku zinezihluzo kuzo ekumele ukuba zithintele i-100% yee-aerosols kwaye zithintele ungcoliseko xa kusathathwa iisampulu.Kodwa zingakanani ezi ngcebiso zibiza kakhulu kwaye zineendleko zokusingqongileyo zixhamla ngokwenene kwiilebhu kwilizwe liphela?Ingaba iilebhu kufuneka zigqibe ekubeni zisikhuphe isihluzi?
Ngokuxhomekeke kuvavanyo okanye uvavanyo olukhoyo, iilabhoratri kunye namaziko ophando aya kukhetha ukusebenzisa iingcebiso ezingahluzwanga okanye ezihluziweyo zepipette.Iilebhu ezininzi zisebenzisa iingcebiso ezihluziweyo kuba zikholelwa ukuba izihluzi ziyakuthintela zonke ii-aerosols ukuba zingcolise isampulu.Izihluzi zibonwa ngokuqhelekileyo njengendlela eyongayo yokuphelisa ngokupheleleyo ungcoliseko olusuka kwisampulu, kodwa ngelishwa oku akunjalo.Iifilitha zencam ye-Polyethylene pipette azikuthinteli ukungcoliseka, kodwa endaweni yoko zicotha ukusasazeka kwezinto ezingcolileyo.
Inqaku lamva nje le-Biotix lithi, "[igama] umqobo ligama elingafanelekanga kwamanye ala macebiso.Iingcebiso ezithile kuphela eziphezulu zibonelela ngomqobo wokutywina oyinyaniso.Uninzi lwezihluzi zicothisa kuphela ulwelo ekungeneni kumbhobho wepipette.Uphononongo oluzimeleyo lwenziwe lujonga ezinye iindlela zokucoca iingcebiso kunye nokusebenza kwazo xa kuthelekiswa neengcebiso ezingahluziyo.Inqaku elipapashwe kwiJenali ye-Applied Microbiology, eLondon (1999) yafunda ukusebenza kweengcebiso zokucoca i-polyethylene xa ifakwe ekupheleni kokuvulwa kwe-pipetti ye-tip cone xa kuthelekiswa neengcebiso ezingahluzwanga.Kwiimvavanyo ze-2620, i-20% yeesampulu zibonise ukungcoliswa kwe-carryover kwimpumlo ye-pipettor xa kungekho sihlungi sisetyenzisiweyo, kwaye i-14% yeesampuli zaye zangcoliswa xa i-polyethylene (PE) isicatshulwa sokucoca isetyenziswe (Umfanekiso 2).Uphononongo luphinde lwafumanisa ukuba xa i-radioactive liquid okanye i-plasmid DNA ifakwe umbhobho ngokusebenzisa i-filter, ukungcoliswa kombhobho we-pipettor kwenzeka ngaphakathi kwe-pipettings ye-100.Oku kubonisa ukuba nangona iingcebiso ezihluziweyo zinciphisa inani lokungcoliswa komnqamlezo ukusuka kwincam enye ukuya kwenye, izihluzi aziyeki ukungcoliseka ngokupheleleyo.
Ixesha lokuposa: Aug-24-2020