Dab tsi yog qhov txawv ntawm Ib Lub Fume Hood thiab Biosafety Hood?
Dec 25, 2023
Dab tsi yog qhov txawv ntawm fume hood thiab biosafety hood?
Taw qhia:
Thaum nws los txog rau kev kuaj kev nyab xeeb, kev siv cov txheej txheem ntim khoom kom raug yog qhov tseem ceeb. Ob qhov tseem ceeb ntawm cov khoom siv uas feem ntau siv hauv chav kuaj yog fume hoods thiab biosafety hoods. Ob lub hoods no ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv cov kws tshawb fawb thiab tswj xyuas qhov chaw ua haujlwm nyab xeeb. Txawm li cas los xij, lawv muaj qhov sib txawv hauv kev tsim, kev siv, thiab lub hom phiaj npaj. Hauv tsab xov xwm no, peb yuav qhia txog qhov tshwj xeeb ntawm fume hoods thiab biosafety hoods, qhia txog lawv cov yam ntxwv tshwj xeeb thiab kev ua haujlwm.
Fume Hoods:
Design thiab Structure:
Fume hoods feem ntau yog tsim los tswj thiab tshem tawm cov khoom phom sij, vapors, thiab gases los ntawm qhov chaw kuaj mob. Lawv muaj cov chaw ua haujlwm loj, feem ntau yog ua los ntawm cov khoom siv corrosion-resistant xws li stainless hlau, nrog lub pob tshab pem hauv ntej sash los yog qhov rooj kom pom kev thiab nkag mus. Fume hoods tau nruab nrog lub qhov cua uas nqus cua los ntawm chav kuaj, los ntawm lub hood, thiab ua kom muaj kev nyab xeeb rau nws sab nraum lub tsev lossis rov ua dua tom qab pom qhov tsim nyog.
Extraction thiab Ventilation:
Lub luag haujlwm tseem ceeb ntawm lub fume hood yog txhawm rau tshem tawm cov pa phem uas tshwm sim thaum kev sim thiab kev tshawb fawb. Fume hoods siv lub zog tso pa tawm los rub cov pa thiab cov pa paug tawm ntawm tus neeg siv, tiv thaiv lawv txoj kev nqus pa. Qhov no ua kom ntseeg tau tias cov khoom siv tshuaj lom lossis phom sij tsim nyob rau hauv lub hood raug tshem tawm kom nyab xeeb sab nraum qhov chaw kuaj mob.
Hom:
Fume hoods tuaj nyob rau hauv ntau hom, nrog rau ducted fume hoods thiab ductless (recirculating) fume hoods. Ducted fume hoods txuas nrog lub tshuab cua sab nraud los ntawm kev ua haujlwm duct, tso cai rau cov pa paug tawm ncaj qha rau sab nraum lub tsev. Ductless fume hoods, ntawm qhov tod tes, ntiav cov tshuab lim siab tshaj plaws los ntxuav cov huab cua ua ntej nws rov qab mus rau hauv chav kuaj. Qhov kev xaiv ntawm cov hom yog nyob ntawm qhov kev xav tau tshwj xeeb thiab qhov xwm txheej ntawm qhov kev sim ua.
Daim ntawv thov:
Fume hoods feem ntau siv nyob rau hauv lub chaw soj nstuam uas muaj tshuaj lom neeg cov tshuaj tiv thaiv, tshuaj volatile, los yog tsis muaj pa gases koom nrog. Lawv tau ua haujlwm hauv ntau qhov chaw tshawb fawb, suav nrog chemistry, kws tshuaj, biochemistry, thiab forensic sciences. Fume hoods yog qhov tseem ceeb hauv kev tiv thaiv cov kws tshawb fawb los ntawm kev cuam tshuam rau cov tshuaj lom thiab ua kom ntseeg tau tias qhov chaw kuaj mob tseem nyob nyab xeeb.
Biosafety Hoods:
Design thiab Structure:
Biosafety hoods, tseem hu ua biosafety txee los yog biosafety txee, yog tsim los muab kev tswj hwm thiab ua haujlwm tsis zoo rau kev tuav cov khoom lom lom lom, xws li cov kab mob thiab cov kab mob sib kis. Cov hoods no muaj cov qauv ntau dua piv rau fume hoods thiab tau tsim tshwj xeeb los tiv thaiv kev tso tawm cov kab mob phem mus rau hauv chav kuaj lossis ib puag ncig ib puag ncig.
Containment Levels:
Biosafety hoods tau muab faib ua ntau hom kev tiv thaiv raws li qib kev tiv thaiv tau muab. Cov qib tswj tau muaj txij li BSC-1 mus rau BSC-3, nrog nce qib ntawm kev ntsuas kev nyab xeeb thiab ceev faj. Txhua qib muaj cov qauv tsim tshwj xeeb, cov qauv airflow, thiab cov txheej txheem ua haujlwm kom ntseeg tau tias muaj kev tiv thaiv ntawm cov neeg ua haujlwm, ib puag ncig, thiab cov qauv kev tshawb fawb.
Airflow thiab Filtration:
Tsis zoo li fume hoods uas feem ntau tshem tawm huab cua, biosafety hoods siv kev sib xyaw ua ke ntawm cov qauv airflow thiab cov tshuab pom zoo los muab qhov chaw tsis muaj menyuam. Cov hoods no tswj cov cua tsis tu ncua ntawm cov cua lim uas tiv thaiv kev khiav tawm ntawm cov kab mob thiab cov kab mob. Cov huab cua yog lim los ntawm high-efficiency particulate air (HEPA) lim thiab, qee zaum, ntxiv los ntawm cov ntxaij lim dej ntxiv kom ua tiav qib siab ntawm kev tsis muaj menyuam.
Daim ntawv thov:
Biosafety hoods yog qhov tseem ceeb hauv cov chaw soj nstuam ua kev tshawb fawb txog tib neeg lossis tsiaj cov kab mob nrog rau lwm yam khoom muaj feem kis tau. Lawv tau siv dav hauv cov chaw tshawb fawb kho mob, chaw kuaj mob kuaj mob, thiab cov tuam txhab tshuaj. Biosafety hoods xyuas kom muaj kev nyab xeeb thiab kev nyab xeeb ntawm cov khoom siv roj ntsha, txo qhov kev pheej hmoo ntawm kev kis kab mob thiab tso tawm cov kab mob phem.
Qhov txawv ntawm Fume Hoods thiab Biosafety Hoods:**
1. ** Lub hom phiaj:Thawj qhov sib txawv ntawm fume hoods thiab biosafety hoods yog nyob rau hauv lawv lub hom phiaj. Fume hoods yog tsim tshwj xeeb los tswj cov tshuaj, cov pa phem, thiab vapors, thaum biosafety hoods yog tsim los tuav cov khoom lom, nrog rau cov kab mob thiab cov kab mob sib kis.
2. Kev tsim kho:Fume hoods feem ntau yooj yim dua hauv cov qauv, tsom mus rau kev tshem tawm kom zoo thiab tshem tawm cov pa phem. Biosafety hoods, ntawm qhov tod tes, muaj cov qauv tsim ntau dua los xyuas kom muaj kev tiv thaiv thiab tsis muaj menyuam, nrog rau cov yam ntxwv ntxiv xws li airlocks, ob lub qhov rooj, thiab qhov sib txawv siab.
3. Airflow:Fume hoods cia siab rau lub tshuab tso pa tawm kom tshem tawm cov pa paug tawm hauv chav kuaj, thaum biosafety hoods siv cov qauv airflow siab heev los tswj kom tsis muaj menyuam nyob hauv qhov chaw ua haujlwm. Lub hauv paus airflow kev taw qhia nyob rau hauv fume hoods yog los ntawm tus neeg teb xov tooj mus rau lub hood, whereas biosafety hoods siv laminar airflow uas directs huab cua deb ntawm tus neeg teb xov tooj los tiv thaiv kev kis kab mob.
4. Lim:Fume hoods feem ntau ntiav cov lim dej kom tshem tawm cov khoom me me tab sis tsis muab tib theem ntawm cov kab mob los yog cov lim dej tsis zoo li biosafety hoods. Biosafety hoods suav nrog HEPA cov ntxaij lim dej uas cuam tshuam cov kab mob microscopic, ua kom tsis muaj menyuam thiab tiv thaiv kev tso tawm ntawm cov kab mob lom.
5. Containment Levels:Fume hoods tsis muaj cov qib ruaj khov xws li biosafety hoods. Biosafety hoods tau muab faib ua theem ntim (BSC-1 rau BSC-3) raws li qib kev tiv thaiv lawv muab, suav nrog cov xwm txheej xws li airflow, pom, thiab cov txheej txheem ua haujlwm.
Xaus:
Fume hoods thiab biosafety hoods yog cov khoom tseem ceeb ntawm kev kuaj xyuas kev nyab xeeb, txhua qhov ua haujlwm sib txawv. Thaum fume hoods yog tsim los rau kev nyab xeeb ntawm cov tshuaj thiab cov pa phem, biosafety hoods muab ib puag ncig tswj kev ua haujlwm nrog cov khoom siv roj ntsha uas muaj peev xwm kis tau. Kev nkag siab txog qhov sib txawv thiab xaiv lub hood tsim nyog rau qhov chaw kuaj mob tshwj xeeb yog qhov tseem ceeb hauv kev ua kom muaj kev tiv thaiv ntawm cov kws tshawb fawb, ib puag ncig, thiab kev ncaj ncees ntawm cov qauv tshawb fawb.