凈(jing)化工(gong)作(zuo)臺是一(yi)種局部(bu)層流(liu)裝(zhuang)置,能(neng)在(zai)局部(bu)形成(cheng)(cheng)高潔度的工(gong)作(zuo)環境(jing)。它(ta)由工(gong)作(zuo)臺、過濾(lv)器、風機、靜壓(ya)箱(xiang)和支(zhi)撐(cheng)體等(deng)組成(cheng)(cheng),采用(yong)過濾(lv)空氣(qi)(qi)使工(gong)作(zuo)臺操作(zuo)區(qu)達到凈(jing)化除菌的目的。室內空氣(qi)(qi)經預過濾(lv)器和高效過濾(lv)除塵(chen)后(hou)以垂直或水平(ping)層流(liu)狀態(tai)通過工(gong)作(zuo)臺的操作(zuo)區(qu),由于(yu)空氣(qi)(qi)沒(mei)有渦流(liu),所以,任何一(yi)點灰塵(chen)或附著在(zai)灰塵(chen)上的雜菌都能(neng)被排除,不易向別(bie)處擴散和轉移。因此,可使操作(zuo)區(qu)保(bao)持無菌狀態(tai)。
與無茵室和疫苗注射箱相對,便用吸附做事情臺圖片具有著做事情經濟條件好、方法以便于、無茵療效不靠譜、無紫外線消毒解毒劑對女性身體后果、占據的面積小且可運動等優越性。若是貼到無茵屋內便用,無茵療效更快。其有缺陷是市場價非常昂貴,預吸附器和優質吸附器還需定期進行拆洗和換洗。 油田水汽殺菌鍋高壓(ya)蒸汽(qi)滅(mie)(mie)菌鍋(guo)(guo)是一(yi)個密閉的(de)、可以(yi)耐(nai)受一(yi)定壓(ya)力的(de)雙層金屬鍋(guo)(guo)。鍋(guo)(guo)底或夾層內(nei)盛水(shui),當水(shui)在(zai)鍋(guo)(guo)內(nei)沸騰時(shi)(shi)由于蒸汽(qi)不能(neng)逸出,使鍋(guo)(guo)內(nei)壓(ya)力逐漸(jian)升高,水(shui)的(de)沸點和(he)溫(wen)度可隨之升高,從而達到高溫(wen)滅(mie)(mie)菌的(de)目的(de)。一(yi)般在(zai)0.11MPa的(de)壓(ya)力下,121℃滅(mie)(mie)菌20~30min,包括芽孢在(zai)內(nei)的(de)所(suo)有微生物均可被(bei)殺(sha)死。如果滅(mie)(mie)菌物品體(ti)積較(jiao)大,蒸汽(qi)穿透困(kun)難,可以(yi)適當提高蒸汽(qi)壓(ya)力或延(yan)長滅(mie)(mie)菌時(shi)(shi)間(jian)。
低壓殺菌鍋有水平、垂直、手拿式等好幾那個種類行,在微動物學實驗報告室,尤為長用的是手拿式和垂直低壓過熱蒸汽殺菌鍋。和臥式儲罐殺菌鍋相對,低壓殺菌鍋的的優勢是殺菌必備的時候短、降低成本然料、殺菌徹底解決等。其短處是價高昂,殺菌使用量較小。 的培養箱培(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)(yang)(yang)箱(xiang)是培(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)(yang)(yang)微生(sheng)物的(de)(de)(de)專用(yong)(yong)(yong)設(she)備(bei)。制熱式培(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)(yang)(yang)箱(xiang)是由電爐絲和(he)溫(wen)(wen)(wen)度(du)(du)控制儀合成的(de)(de)(de)固定體積(ji)的(de)(de)(de)恒(heng)(heng)溫(wen)(wen)(wen)培(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)(yang)(yang)裝(zhuang)置,大小(xiao)規(gui)格不一。微生(sheng)物實(shi)驗室(shi)常(chang)用(yong)(yong)(yong)的(de)(de)(de)培(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)(yang)(yang)箱(xiang)工(gong)作容積(ji)有450×450×350mm3或650×500×500mm3,適用(yong)(yong)(yong)于室(shi)溫(wen)(wen)(wen)至60℃之間的(de)(de)(de)各類微生(sheng)物培(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)(yang)(yang)。目前(qian),隨著科學水平的(de)(de)(de)發展,培(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)(yang)(yang)箱(xiang)設(she)備(bei)的(de)(de)(de)完善程度(du)(du)和(he)價格有很大差別。有各種結構合理(li)、功能(neng)齊全(quan)的(de)(de)(de)培(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)(yang)(yang)箱(xiang),如恒(heng)(heng)溫(wen)(wen)(wen)培(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)(yang)(yang)箱(xiang)、恒(heng)(heng)溫(wen)(wen)(wen)恒(heng)(heng)濕(shi)培(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)(yang)(yang)箱(xiang)、低(di)溫(wen)(wen)(wen)培(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)(yang)(yang)箱(xiang)、微生(sheng)物多(duo)用(yong)(yong)(yong)培(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)(yang)(yang)箱(xiang)和(he)二氧化(hua)碳(tan)培(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)(yang)(yang)箱(xiang)等。有的(de)(de)(de)用(yong)(yong)(yong)計算(suan)機控制,可選(xuan)擇多(duo)條時(shi)間線變換溫(wen)(wen)(wen)差,從而克服(fu)了環境溫(wen)(wen)(wen)度(du)(du)的(de)(de)(de)影響(xiang),一年四季均能(neng)達(da)到培(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)(yang)(yang)要求的(de)(de)(de)溫(wen)(wen)(wen)度(du)(du)。
微(wei)生(sheng)物(wu)多(duo)用培養箱是集(ji)加熱、制(zhi)冷和振蕩于(yu)一體的微(wei)生(sheng)物(wu)液體發(fa)酵裝置。工作(zuo)(zuo)室(shi)的溫度(du)在15~50℃范圍內(nei)任(ren)意選定,選定后經溫控(kong)(kong)(kong)儀自動控(kong)(kong)(kong)制(zhi),保(bao)持(chi)工作(zuo)(zuo)室(shi)內(nei)恒溫。同(tong)時設有可控(kong)(kong)(kong)硅調速系統,振蕩機轉(zhuan)速可在1~220rpm范圍內(nei)任(ren)意調控(kong)(kong)(kong)。
太干箱干燥(zao)箱(xiang)(xiang)是用于除去潮濕物(wu)(wu)料(liao)內及器皿內外水分或其它(ta)揮發性溶液的(de)(de)設備。類型很多,有(you)箱(xiang)(xiang)式(shi)、滾(gun)筒式(shi)、套間式(shi)、回(hui)轉式(shi)等。微生(sheng)物(wu)(wu)學(xue)實驗室(shi)多用箱(xiang)(xiang)式(shi)干燥(zao)箱(xiang)(xiang),大小(xiao)規(gui)格不一。工作(zuo)室(shi)內配(pei)有(you)可活動(dong)的(de)(de)鐵絲(si)(si)網板,便于放置(zhi)被(bei)干燥(zao)的(de)(de)物(wu)(wu)品。制(zhi)熱升溫(wen)(wen)式(shi)干燥(zao)箱(xiang)(xiang)也是有(you)電爐絲(si)(si)和溫(wen)(wen)度控(kong)制(zhi)儀組(zu)成(cheng),可調節溫(wen)(wen)度從室(shi)溫(wen)(wen)至300℃任意選擇(ze)。有(you)的(de)(de)干燥(zao)箱(xiang)(xiang)采用導電溫(wen)(wen)度計為敏感元件(jian),配(pei)合晶體(ti)管(guan)(guan)和繼電器組(zu)成(cheng)自動(dong)控(kong)制(zhi)系統,克服了(le)金屬管(guan)(guan)型熱膨脹控(kong)制(zhi)的(de)(de)缺點。此(ci)外,還(huan)有(you)真(zhen)空干燥(zao)箱(xiang)(xiang)(配(pei)有(you)真(zhen)空泵和氣壓(ya)(ya)表),可在(zai)常壓(ya)(ya)或減壓(ya)(ya)下操作(zuo)。
搖床
搖(yao)床(chuang)又稱搖(yao)瓶(ping)機(ji),它是培養好氣性微生物(wu)的(de)小型試驗設備(bei)或(huo)(huo)作為(wei)種(zhong)子擴大培養之用,常用的(de)搖(yao)床(chuang)有往(wang)復式和旋轉式兩種(zhong)。往(wang)復式搖(yao)床(chuang)的(de)往(wang)復頻(pin)(pin)率一(yi)般在(zai)(zai)80~140次(ci)/min,沖(chong)程一(yi)般為(wei)5~14cm,如(ru)頻(pin)(pin)率過(guo)快(kuai)、沖(chong)程過(guo)大或(huo)(huo)瓶(ping)內液體裝(zhuang)量過(guo)多,在(zai)(zai)搖(yao)動時液體會濺到包扎(zha)瓶(ping)口的(de)紗布或(huo)(huo)棉塞上,導致雜菌污染,特別(bie)是啟動時更容易發(fa)生這種(zhong)情況。旋轉式搖(yao)床(chuang)的(de)偏(pian)心距(ju)一(yi)般在(zai)(zai)3~6cm之間(jian),旋轉次(ci)數為(wei)60~300rpm。
放在(zai)搖(yao)(yao)床(chuang)(chuang)上(shang)的(de)(de)培養瓶(ping)(一般為三(san)角瓶(ping))中的(de)(de)發酵液所需要的(de)(de)氧(yang)(yang)是(shi)由空氣經瓶(ping)口包扎的(de)(de)紗布(一般8層)或(huo)棉塞通入的(de)(de),所以氧(yang)(yang)的(de)(de)傳(chuan)遞與瓶(ping)口的(de)(de)大小、瓶(ping)口的(de)(de)幾(ji)何(he)形狀(zhuang)、棉塞或(huo)紗布的(de)(de)厚度和(he)密度有(you)關(guan)。在(zai)通常情況下,搖(yao)(yao)瓶(ping)的(de)(de)氧(yang)(yang)吸收系數取決(jue)于搖(yao)(yao)床(chuang)(chuang)的(de)(de)特性和(he)三(san)角瓶(ping)的(de)(de)裝樣量。
回轉式式搖床是采用了曲柄設計原理推動搖床作回轉式移動,屏幕為鐵或木質的長方框子,下有層至四層棧板,棧板上面有圓洞備放培養計劃出瓶,孔中凹進一些三邊形形橡膠,用于固定住培養計劃出瓶并可以減少瓶的振動模式,傳動齒輪企業尋常采用了2級腰帶輪低速,調整變頻調速腰帶輪可變回轉式速度。偏軸輪輪上都有不相同的偏軸輪孔,以便改善偏軸輪距。回轉式式搖床的速度和偏軸輪距的尺寸大小對氧的吸引有比較突出的影響力。 翻轉視頻式搖床是回收利用翻轉視頻的偏軸軸使塑料鐵木質托盤擺動旋轉,塑料鐵木質托盤有顆層或倆層,該用不銹角鋼、蜂窩鋁板或竹木板打造。在4個偏軸軸上配有地腳螺栓能自由調節節左右,使塑料鐵木質托盤始終保持含量。這一搖床成分錯綜復雜,造貴點。其缺點是氧的引入盡量、工作效率需求小、陪養基也不會濺到瓶口的毛巾上。 高倍顯微鏡 微海洋動物整體很小,必定憑借電子電子顯微鏡就能夠分析弄清楚這些食品的整體形式和腫瘤細胞形式。這樣,在微海洋動物學的一項探討中,電子電子顯微鏡就是不缺失的機器。顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)的種(zhong)類很(hen)多,根據其結構,可(ke)以分為(wei)光(guang)學(xue)(xue)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)和(he)非光(guang)學(xue)(xue)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)兩大類。光(guang)學(xue)(xue)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)又可(ke)分為(wei)單式(shi)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)和(he)復式(shi)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)。最(zui)簡單的單式(shi)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)即(ji)放大鏡(jing)(jing)(jing)(放大倍數(shu)常在10倍左右(you)),構造(zao)復雜的單式(shi)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)為(wei)解剖顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(放大倍數(shu)在200左右(you))。在微(wei)(wei)(wei)(wei)(wei)(wei)生物(wu)學(xue)(xue)的研究(jiu)中,主要是復式(shi)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)。其中以普(pu)通光(guang)學(xue)(xue)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(明視野(ye)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing))最(zui)為(wei)常用。此外,還有暗(an)視野(ye)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)、相差顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)、熒光(guang)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)、偏光(guang)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)、紫外光(guang)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)和(he)倒置顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)等。非光(guang)學(xue)(xue)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)為(wei)電子顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)。
打疫苗箱接種(zhong)(zhong)(zhong)箱(xiang)(xiang)(xiang)分(fen)為(wei)(wei)固體(ti)菌(jun)種(zhong)(zhong)(zhong)接種(zhong)(zhong)(zhong)箱(xiang)(xiang)(xiang)和(he)(he)液體(ti)菌(jun)種(zhong)(zhong)(zhong)接種(zhong)(zhong)(zhong)箱(xiang)(xiang)(xiang)兩(liang)(liang)種(zhong)(zhong)(zhong)。固體(ti)菌(jun)種(zhong)(zhong)(zhong)接種(zhong)(zhong)(zhong)箱(xiang)(xiang)(xiang)是一(yi)個(ge)用木(mu)料和(he)(he)玻(bo)(bo)(bo)璃制成(cheng)或由有(you)(you)機玻(bo)(bo)(bo)璃焊接而成(cheng)的(de)(de)(de)(de)密(mi)閉(bi)小箱(xiang)(xiang)(xiang)。又分(fen)為(wei)(wei)雙人(ren)和(he)(he)單人(ren)操(cao)作(zuo)箱(xiang)(xiang)(xiang)。箱(xiang)(xiang)(xiang)體(ti)可(ke)大(da)可(ke)小,一(yi)般(ban)箱(xiang)(xiang)(xiang)體(ti)長約143cm,寬86cm,總高154cm,支架76cm。箱(xiang)(xiang)(xiang)的(de)(de)(de)(de)上部(bu)(bu)左右兩(liang)(liang)側(ce)各(ge)裝有(you)(you)兩(liang)(liang)扇(shan)能啟閉(bi)的(de)(de)(de)(de)玻(bo)(bo)(bo)璃推(tui)拉門,方便菌(jun)種(zhong)(zhong)(zhong)進出。窗的(de)(de)(de)(de)下(xia)部(bu)(bu)分(fen)別設有(you)(you)兩(liang)(liang)個(ge)直徑約13cm的(de)(de)(de)(de)圓洞(dong),兩(liang)(liang)洞(dong)的(de)(de)(de)(de)中(zhong)心(xin)距離為(wei)(wei)52cm(同肩寬),洞(dong)口裝有(you)(you)帶(dai)松緊帶(dai)的(de)(de)(de)(de)袖(xiu)套(tao)(tao),以防雙手(shou)(shou)在箱(xiang)(xiang)(xiang)內操(cao)作(zuo)時,外界(jie)空氣進入箱(xiang)(xiang)(xiang)內造成(cheng)污染。操(cao)作(zuo)時兩(liang)(liang)人(ren)相對而坐,雙手(shou)(shou)通(tong)過袖(xiu)套(tao)(tao)伸入箱(xiang)(xiang)(xiang)內。箱(xiang)(xiang)(xiang)兩(liang)(liang)側(ce)最好也裝上玻(bo)(bo)(bo)璃,箱(xiang)(xiang)(xiang)頂部(bu)(bu)為(wei)(wei)木(mu)板或玻(bo)(bo)(bo)璃。箱(xiang)(xiang)(xiang)內頂部(bu)(bu)裝有(you)(you)紫外線(xian)殺菌(jun)燈和(he)(he)照明用日光燈各(ge)一(yi)支。箱(xiang)(xiang)(xiang)體(ti)安裝木(mu)板或玻(bo)(bo)(bo)璃均可(ke),但要注意(yi)密(mi)封。
液體(ti)(ti)菌種(zhong)(zhong)接種(zhong)(zhong)箱(xiang)(xiang)(xiang)是專為移接液體(ti)(ti)菌種(zhong)(zhong)而(er)設(she)計的。比固(gu)體(ti)(ti)菌種(zhong)(zhong)箱(xiang)(xiang)(xiang)窄長,單側(ce)兩(liang)人操作。內設(she)軌道和紫外線燈,箱(xiang)(xiang)(xiang)兩(liang)端開有高25cm,寬10cm的長方形出(chu)口(kou),方便菌種(zhong)(zhong)進(jin)(jin)(jin)出(chu),洞口(kou)設(she)有小推門。進(jin)(jin)(jin)出(chu)口(kou)下處設(she)蒸汽(qi)源,接種(zhong)(zhong)時用蒸汽(qi)封住進(jin)(jin)(jin)出(chu)口(kou),以(yi)防雜菌進(jin)(jin)(jin)入(ru)箱(xiang)(xiang)(xiang)內。箱(xiang)(xiang)(xiang)背面設(she)有液體(ti)(ti)菌種(zhong)(zhong)移接管能進(jin)(jin)(jin)入(ru)的小孔。
接種(zhong)箱滅菌(jun)時(shi),用紫外線(xian)(xian)照射30min。如果沒有紫外線(xian)(xian)燈,可(ke)用甲(jia)醛和(he)高錳酸(suan)鉀(甲(jia)醛10~14mL/m3+高錳酸(suan)鉀5~7g/m3空間)熏蒸30min以上。使用時(shi),先(xian)將所需物品和(he)工具放(fang)入接種(zhong)箱內(nei),然后進行(xing)藥劑熏蒸和(he)紫外線(xian)(xian)滅菌(jun),再按無菌(jun)操(cao)作進行(xing)接種(zhong)。接種(zhong)箱的結(jie)構簡單,造價低廉,易消毒(du)滅菌(jun),操(cao)作方便,而且人在箱外操(cao)作,氣溫較高時(shi)也能作業。缺點是進出培養基費(fei)工費(fei)時(shi),每次接種(zhong)前都(dou)需要進行(xing)滅菌(jun)。
保鮮柜 微生物實驗室的冰箱主要有兩種:普通冰箱和低溫冷凍冰箱。普通冰箱一般都具有兩個柜子,即鮮藏柜和冷藏柜,溫度分別為4℃和-20℃;低溫冷凍冰箱溫度一般控制在-40~-80℃。它們都可以用于微生物菌種保藏。鮮藏柜常用于保存斜面菌種,保藏時間在3個月左右。超過3個月,斜面就會變干,因此需要轉接菌種。如果要長時間保存菌種,則需要經過處理后,貯藏于普通冰箱的冷藏柜或低溫冷凍冰箱中,它們的保藏時間較長,一般都在1年以上。

