Iyiphi i-fume hood efanele elebhu yakho?

The I-Fume Hood iyisisekelo sokuphepha esibalulekile emakilasini ekhemistri namalebhu ocwaningo. Ukuthola okuningi ku-fume hood kuqala ngokukhetha elungele isicelo sakho. Lokho kusho ukwazi kahle ukuthi hlobo luni lomsebenzi oluzokwenziwa ku-fume hood bese ukhetha phakathi kwevolumu yomoya engashintshi kanye nevolumu yomoya eguquguqukayo, ukukhetha phakathi kwe-ducted kanye I-Ductless Fume Hood, nokukhetha impahla efanele yokwakha.

Izinto zokwakha

I-fume hood kufanele ihambisane namakhemikhali ezochayeka kuwo. Isibonelo, labo abenza ukugaywa kwe-asidi cishe bazodinga i-polypropylene fume hood noma enye into efanayo ekwazi ukumelana nokugqwala. Ukusebenza ngama-radioisotopes noma i-perchloric acid ngokuvamile kudinga eyensimbi engagqwali. Kulabo abasebenza ngamakhemikhali angagqwali noma abola ngokulingene, ihood yensimbi eyinsimbi ngokuvamile yanele.

I-Ductless vs

Amalebhu kufanele acabangele ukuthi i-fume hood edonswayo noma engenamapayipi iwafanele yini. Yendabuko I-Ducted Fume Hoods ayadingeka ezimweni ezithile: ukwamukela izilinganiso ezisindayo zama-asidi, njengenqubo yokugaya i-asidi, lapho usebenza namagesi ahloniphekile, noma ezimeni lapho inani elingaziwa lokuhwamuka lenzeka ku-hood. Yize amaphesenti angama-90 ekhemistri eyenziwa kulabhu namuhla angenziwa Ama-Fume Hoods Ahlungiwe, isekhona indawo yezigqoko zentuthu zendabuko.

Ngakolunye uhlangothi, abasebenzisi abenza izinqubo eziphindaphindayo, njengalezo ezivela ekulawuleni ikhwalithi, futhi bazi ukuthi ingakanani ivolumu yamakhemikhali abazoyisebenzisa nokuthi yiliphi izinga lokushisa, bangazuza ku-fume hood engenamapayipi. Noma kunjalo, ngaphambi kokukhetha i-fume hood, abasebenzisi kufanele banikeze umkhiqizi uhlu lwamakhemikhali abahlela ukuwasebenzisa ukuze basize ukuthola ukuthi i-ductless noma i-ductless iyisixazululo esifanele.

Ngisho nangemva kokuba ilebhu isinqume nge-fume hood engenamapayipi, kusenombuzo wokuthi hlobo luni lokuhlunga oluzokwazi ukufeza izidingo zabo zokuphepha kangcono. Amanye amalebhu azodinga kokubili ukuhlungwa kwe-HEPA kanye nokuhlunga kwamangqamuzana. Isibonelo, amalebhu e-forensic aphatha ama-opioid nama-analogue awo kanye namakhemikhali okuhlaziya afaka amakhemikhali ayingozi ukuze anqume amandla awo nezinye izici. Kulesi sibonelo, i-HEPA nesihlungi samangqamuzana singahlanganiswa ohlelweni lokuhlunga ukuze kuqinisekiswe ukuphepha okufanele.

I-CAV iqhudelana ne-VAV

Ivolumu yomoya engashintshi (i-CAV) ikhipha umoya ofanayo kungakhathaliseki ukuthi ikuphi indawo ye-sash, kuyilapho amasistimu evolumu yomoya eshintshashintshayo (VAV) eshintsha inani lomoya ophelile kusukela ku-fume hood ukuphendula ekuvulekeni kwesashi. Kuzinhlelo zokusebenza ezikhethekile ezifana nama-asidi abilayo, i-CAV iyinketho engcono kakhulu ngoba ukwehlisa umthamo womoya kungavumela ukushisa kwakheke ngaphakathi kwehood. Kuye ngezidingo zesikhungo, i-CAV noma i-VAV fume hood ingase isetshenziselwe ikhemistri evamile.

I-VAV inenzuzo kakhulu ku-fume hood edonswayo kune-hoodless fume hood. Lokhu kungenxa yokuthi kuma-fume hoods, ufuna ukwehlisa izinga lokugeleza komoya okhishwayo esakhiweni. Kuma-hoods ahlungiwe, i-VAV ayisebenzi kangako ngoba umoya onesimo uhlala ngaphakathi kwegumbi.

Ngaphezu kwalokhu kucatshangelwa, abantu abakhetha i-fume hood yamalebhu abo kufanele futhi bacwaninge ngemali enkulu, ukufakwa, kanye nezindleko zokusebenza ezihilelekile; amawaranti; kanye nesevisi nokwesekwa okuhlinzekwa ngumkhiqizi ukuze aqinisekise ukuthi bathola uhlelo olufanele oluhambisana nesabelomali sabo futhi bafeze izidingo zabo zokuphepha.