一、生物安全柜有哪些作用
一(yi)級(ji)生(sheng)(sheng)物安全(quan)柜(ju)可以起到保(bao)護工(gong)作人員和環(huan)境的作用(yong),但是不保(bao)護樣品(pin)。二(er)級(ji)生(sheng)(sheng)物安全(quan)柜(ju),有“下(xia)沉氣流”不斷(duan)吹過工(gong)作區域,可以保(bao)護柜(ju)中的試(shi)驗品(pin)不被外界污染(ran)。三級(ji)生(sheng)(sheng)物安全(quan)柜(ju),柜(ju)體100%全(quan)排放式,所(suo)有的氣體均不參與(yu)循環(huan),適用(yong)于高風險(xian)的生(sheng)(sheng)物試(shi)驗。
生物安全柜廣(guang)泛應用于(yu)微(wei)生(sheng)物(wu)學、生(sheng)物(wu)醫學、基因工程、生(sheng)物(wu)制品等領域(yu)的(de)科研、教學、臨(lin)床檢驗和生(sheng)產中(zhong),是實驗室生(sheng)物(wu)安全中(zhong)一(yi)級防護屏(ping)障中(zhong)最基本的(de)安全防護設備。
二、生物安全柜的原理是什么
前文已經(jing)簡單(dan)了解到了生物安全(quan)柜有哪些作用,接著咱們再(zai)來(lai)看(kan)(kan)看(kan)(kan)生物安全(quan)柜的原(yuan)理(li)是什么吧!
生(sheng)(sheng)物(wu)安(an)全(quan)柜的(de)(de)工作原(yuan)理(li)主(zhu)要是通過(guo)(guo)(guo)空(kong)(kong)(kong)氣(qi)流(liu)動(dong)來實(shi)(shi)(shi)現的(de)(de)。生(sheng)(sheng)物(wu)安(an)全(quan)柜內部(bu)有三個區(qu)(qu)(qu)(qu)域(yu),分(fen)別是工作區(qu)(qu)(qu)(qu)、中(zhong)(zhong)間區(qu)(qu)(qu)(qu)和排風區(qu)(qu)(qu)(qu)。工作區(qu)(qu)(qu)(qu)是實(shi)(shi)(shi)驗(yan)人員進行(xing)實(shi)(shi)(shi)驗(yan)的(de)(de)區(qu)(qu)(qu)(qu)域(yu),中(zhong)(zhong)間區(qu)(qu)(qu)(qu)是用于放置(zhi)實(shi)(shi)(shi)驗(yan)物(wu)品的(de)(de)區(qu)(qu)(qu)(qu)域(yu),排風區(qu)(qu)(qu)(qu)則(ze)是用于排出(chu)空(kong)(kong)(kong)氣(qi)的(de)(de)區(qu)(qu)(qu)(qu)域(yu)。生(sheng)(sheng)物(wu)安(an)全(quan)柜內部(bu)的(de)(de)空(kong)(kong)(kong)氣(qi)流(liu)動(dong)是從上往(wang)(wang)下、從后往(wang)(wang)前的(de)(de)。首先,空(kong)(kong)(kong)氣(qi)從頂部(bu)進入生(sheng)(sheng)物(wu)安(an)全(quan)柜,經過(guo)(guo)(guo)初(chu)效過(guo)(guo)(guo)濾器過(guo)(guo)(guo)濾后,進入中(zhong)(zhong)間區(qu)(qu)(qu)(qu)。在中(zhong)(zhong)間區(qu)(qu)(qu)(qu),空(kong)(kong)(kong)氣(qi)會被(bei)(bei)分(fen)成兩部(bu)分(fen),一部(bu)分(fen)進入工作區(qu)(qu)(qu)(qu),另一部(bu)分(fen)則(ze)進入排風區(qu)(qu)(qu)(qu)。在工作區(qu)(qu)(qu)(qu),空(kong)(kong)(kong)氣(qi)會被(bei)(bei)再次過(guo)(guo)(guo)濾,確(que)保(bao)實(shi)(shi)(shi)驗(yan)物(wu)品不(bu)會對(dui)實(shi)(shi)(shi)驗(yan)人員和環境造成污染和危害(hai)。在排風區(qu)(qu)(qu)(qu),空(kong)(kong)(kong)氣(qi)會被(bei)(bei)排出(chu)生(sheng)(sheng)物(wu)安(an)全(quan)柜,經過(guo)(guo)(guo)高(gao)效過(guo)(guo)(guo)濾器和排氣(qi)管(guan)道后,排出(chu)實(shi)(shi)(shi)驗(yan)室。
生(sheng)(sheng)物(wu)(wu)安全柜的(de)工(gong)(gong)作(zuo)原(yuan)理還包括負壓控制和UV燈殺(sha)菌。生(sheng)(sheng)物(wu)(wu)安全柜內部的(de)空(kong)氣壓力比實(shi)驗(yan)室外部的(de)空(kong)氣壓力低,這(zhe)樣(yang)可(ke)以(yi)防止實(shi)驗(yan)物(wu)(wu)品外泄。此(ci)外,生(sheng)(sheng)物(wu)(wu)安全柜內部還配備了(le)UV燈,可(ke)以(yi)對工(gong)(gong)作(zuo)區進行殺(sha)菌,確保實(shi)驗(yan)物(wu)(wu)品的(de)純凈(jing)度(du)。
因(yin)此,總(zong)的來(lai)說,生(sheng)(sheng)物(wu)安全柜(ju)的工(gong)作原理是通過(guo)空氣(qi)流動、負壓(ya)控制和(he)UV燈殺菌來(lai)保護實(shi)驗人員和(he)環境不受實(shi)驗物(wu)質的污(wu)染和(he)危害。在實(shi)驗室中(zhong)進行生(sheng)(sheng)物(wu)實(shi)驗時,使用(yong)生(sheng)(sheng)物(wu)安全柜(ju)是非常必要的。