凈化工(gong)作臺是一種局(ju)部層流裝置,能在局(ju)部形成(cheng)高(gao)潔度的(de)工(gong)作環境。它由(you)工(gong)作臺、過(guo)(guo)濾器(qi)、風(feng)機(ji)、靜壓箱和支撐體等組成(cheng),采用過(guo)(guo)濾空氣(qi)使工(gong)作臺操(cao)作區(qu)達(da)到凈化除菌的(de)目(mu)的(de)。室內空氣(qi)經預(yu)過(guo)(guo)濾器(qi)和高(gao)效過(guo)(guo)濾除塵后以垂直或水平層流狀態通過(guo)(guo)工(gong)作臺的(de)操(cao)作區(qu),由(you)于空氣(qi)沒有(you)渦流,所以,任(ren)何一點灰(hui)塵或附著在灰(hui)塵上的(de)雜菌都能被排除,不易向別處擴散和轉移。因此,可使操(cao)作區(qu)保持(chi)無菌狀態。
與無菌操作操作檢測的操作室和打疫苗箱較好,運行水凈化作業中臺兼具作業中前提條件好、的操作便、無菌操作操作檢測的操作郊果安全、無清潔消毒藥物制劑對身休導致、占用量規模小且可活動等的特點。如若放置在無菌操作操作檢測的操作辦公室運行,無菌操作操作檢測的操作郊果最佳。其不足之處是市場價太貴,預濾出器和便捷濾出器還都要不定期的清洗和調整。 高壓電蒸汽式滅菌處理鍋高(gao)(gao)壓(ya)蒸(zheng)汽(qi)滅(mie)菌鍋(guo)是一個密閉的、可(ke)(ke)以耐受一定壓(ya)力(li)的雙層金屬鍋(guo)。鍋(guo)底或夾層內(nei)盛水,當水在鍋(guo)內(nei)沸騰時由于蒸(zheng)汽(qi)不能逸出,使(shi)鍋(guo)內(nei)壓(ya)力(li)逐漸升(sheng)高(gao)(gao),水的沸點和(he)溫(wen)度(du)可(ke)(ke)隨之升(sheng)高(gao)(gao),從而達到(dao)高(gao)(gao)溫(wen)滅(mie)菌的目(mu)的。一般(ban)在0.11MPa的壓(ya)力(li)下(xia),121℃滅(mie)菌20~30min,包括芽孢在內(nei)的所有微(wei)生物(wu)(wu)均(jun)可(ke)(ke)被殺死。如果(guo)滅(mie)菌物(wu)(wu)品體積較大,蒸(zheng)汽(qi)穿透困難(nan),可(ke)(ke)以適(shi)當提高(gao)(gao)蒸(zheng)汽(qi)壓(ya)力(li)或延長滅(mie)菌時間。
油田高壓電低壓蒸氣消毒鍋有臥試、柜式、手拿式等多重型號,在微動物學實驗室建設中的安防系統室,在于常常用的是手拿式和柜式油田蒸氣高壓電低壓蒸氣消毒鍋。和過熱蒸汽高壓電低壓蒸氣消毒鍋相對比,油田高壓電低壓蒸氣消毒鍋的的優勢是高壓電低壓蒸氣消毒所需要的時短、浪費燃油、高壓電低壓蒸氣消毒全面等。其優缺點是房價貴,高壓電低壓蒸氣消毒余量較小。 培植箱培養(yang)(yang)箱(xiang)(xiang)(xiang)(xiang)是(shi)(shi)培養(yang)(yang)微(wei)生(sheng)(sheng)物的(de)(de)專(zhuan)用(yong)設備。制熱式培養(yang)(yang)箱(xiang)(xiang)(xiang)(xiang)是(shi)(shi)由電爐絲和(he)溫(wen)(wen)度控(kong)制儀合成(cheng)的(de)(de)固(gu)定體積的(de)(de)恒溫(wen)(wen)培養(yang)(yang)裝置,大(da)(da)小規格不一。微(wei)生(sheng)(sheng)物實驗室(shi)常用(yong)的(de)(de)培養(yang)(yang)箱(xiang)(xiang)(xiang)(xiang)工作(zuo)容積有450×450×350mm3或(huo)650×500×500mm3,適用(yong)于(yu)室(shi)溫(wen)(wen)至60℃之間的(de)(de)各類(lei)微(wei)生(sheng)(sheng)物培養(yang)(yang)。目前,隨(sui)著科學(xue)水平的(de)(de)發展,培養(yang)(yang)箱(xiang)(xiang)(xiang)(xiang)設備的(de)(de)完善程度和(he)價格有很大(da)(da)差別(bie)。有各種結(jie)構合理(li)、功(gong)能齊全的(de)(de)培養(yang)(yang)箱(xiang)(xiang)(xiang)(xiang),如恒溫(wen)(wen)培養(yang)(yang)箱(xiang)(xiang)(xiang)(xiang)、恒溫(wen)(wen)恒濕培養(yang)(yang)箱(xiang)(xiang)(xiang)(xiang)、低溫(wen)(wen)培養(yang)(yang)箱(xiang)(xiang)(xiang)(xiang)、微(wei)生(sheng)(sheng)物多用(yong)培養(yang)(yang)箱(xiang)(xiang)(xiang)(xiang)和(he)二氧(yang)化碳培養(yang)(yang)箱(xiang)(xiang)(xiang)(xiang)等。有的(de)(de)用(yong)計(ji)算機控(kong)制,可選(xuan)擇多條時(shi)間線變換(huan)溫(wen)(wen)差,從而(er)克(ke)服了(le)環境溫(wen)(wen)度的(de)(de)影(ying)響,一年四(si)季均能達到培養(yang)(yang)要求(qiu)的(de)(de)溫(wen)(wen)度。
微(wei)生(sheng)物多(duo)用(yong)培養箱是(shi)集加熱、制冷(leng)和(he)振蕩(dang)(dang)于(yu)一體的(de)微(wei)生(sheng)物液體發酵裝置。工作(zuo)室(shi)的(de)溫度在15~50℃范圍(wei)內(nei)任意(yi)選定(ding),選定(ding)后(hou)經溫控(kong)儀自動控(kong)制,保持工作(zuo)室(shi)內(nei)恒溫。同時設有可(ke)控(kong)硅調速系統,振蕩(dang)(dang)機轉速可(ke)在1~220rpm范圍(wei)內(nei)任意(yi)調控(kong)。
吹干箱干(gan)燥(zao)箱(xiang)是(shi)用(yong)于除去潮濕(shi)物(wu)料(liao)內(nei)及器皿內(nei)外(wai)水(shui)分或其(qi)它揮發性溶(rong)液的(de)設備。類(lei)型很多,有(you)(you)箱(xiang)式(shi)(shi)、滾筒(tong)式(shi)(shi)、套間式(shi)(shi)、回(hui)轉式(shi)(shi)等(deng)。微生(sheng)物(wu)學實驗室(shi)多用(yong)箱(xiang)式(shi)(shi)干(gan)燥(zao)箱(xiang),大小規格(ge)不一。工作(zuo)室(shi)內(nei)配(pei)有(you)(you)可(ke)活(huo)動的(de)鐵絲(si)網板(ban),便于放置被干(gan)燥(zao)的(de)物(wu)品。制熱升溫(wen)式(shi)(shi)干(gan)燥(zao)箱(xiang)也(ye)是(shi)有(you)(you)電(dian)爐絲(si)和(he)(he)溫(wen)度控制儀組成,可(ke)調節溫(wen)度從室(shi)溫(wen)至(zhi)300℃任意(yi)選擇(ze)。有(you)(you)的(de)干(gan)燥(zao)箱(xiang)采用(yong)導電(dian)溫(wen)度計為敏感元件,配(pei)合晶體管和(he)(he)繼(ji)電(dian)器組成自動控制系統,克服了金屬管型熱膨脹控制的(de)缺(que)點(dian)。此外(wai),還有(you)(you)真空干(gan)燥(zao)箱(xiang)(配(pei)有(you)(you)真空泵和(he)(he)氣壓(ya)表),可(ke)在常壓(ya)或減(jian)壓(ya)下(xia)操作(zuo)。
搖床
搖床(chuang)又稱搖瓶機(ji),它是(shi)培養(yang)好氣性微(wei)生物(wu)的(de)小型(xing)試驗設備(bei)或作為種子擴大培養(yang)之(zhi)(zhi)用,常用的(de)搖床(chuang)有(you)往復式和旋(xuan)轉式兩種。往復式搖床(chuang)的(de)往復頻(pin)率(lv)一般在80~140次/min,沖程一般為5~14cm,如頻(pin)率(lv)過快、沖程過大或瓶內液(ye)體裝(zhuang)量過多,在搖動時液(ye)體會濺到包扎瓶口的(de)紗布或棉(mian)塞上,導致雜菌(jun)污(wu)染,特別是(shi)啟動時更(geng)容易發生這(zhe)種情況。旋(xuan)轉式搖床(chuang)的(de)偏心距一般在3~6cm之(zhi)(zhi)間,旋(xuan)轉次數為60~300rpm。
放在搖(yao)床上的(de)(de)(de)培養瓶(ping)(一般(ban)為三(san)角瓶(ping))中的(de)(de)(de)發酵液所需(xu)要的(de)(de)(de)氧是由空氣經(jing)瓶(ping)口(kou)(kou)包扎的(de)(de)(de)紗布(一般(ban)8層(ceng))或棉塞通(tong)(tong)入的(de)(de)(de),所以氧的(de)(de)(de)傳遞與(yu)瓶(ping)口(kou)(kou)的(de)(de)(de)大小(xiao)、瓶(ping)口(kou)(kou)的(de)(de)(de)幾何形狀、棉塞或紗布的(de)(de)(de)厚度和密度有關。在通(tong)(tong)常情(qing)況下,搖(yao)瓶(ping)的(de)(de)(de)氧吸收系數取決于(yu)搖(yao)床的(de)(de)(de)特性和三(san)角瓶(ping)的(de)(de)(de)裝樣量。
回轉式搖床是應用曲柄的工作原理起到搖床作回轉體育運動,外殼為鋼制或鐵質的長方框子,一斜層至兩層木質托盤的,木質托盤的上的園孔備放培育瓶,孔中凸起來的一位三邊形形橡膠,用為比較固定培育瓶并可以減少瓶的機械振動,齒輪變速箱公司般分為中級三角傳動帶輪加速運動,更換調速器三角傳動帶輪可調整回轉工作率。剪力輪上還有不一樣的剪力孔,盡量改善剪力距。回轉式搖床的工作率和剪力距的程度對氧的消除有清晰的反應。 扭動式搖床是采用扭動的剪力軸使木木質托盤價格搖動,木木質托盤價格一層或二屋,可以用不銹厚鋼板、呂板或木質板造成。在八個剪力軸上用有螺釘可變節兩邊,使木木質托盤價格始終維持技術。這類搖床形式復雜的,造貴點。其好處是氧的交換比較、熱效率浪費小、培訓基不想濺到瓶口的紗布繃帶上。 顯微鏡觀察 微動物個人獨資戶很小,需求利用自身體視高倍顯微鏡可以探究明白我們的個人獨資戶特性和神經細胞形式。之所以,在微動物學的多種分析中,體視高倍顯微鏡就加入不可以卻少的用具。顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)的(de)(de)種類很多,根據其結構,可以分(fen)為(wei)(wei)光學(xue)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)和非(fei)光學(xue)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)兩(liang)大類。光學(xue)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)又可分(fen)為(wei)(wei)單(dan)式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)和復(fu)式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)。最(zui)(zui)簡單(dan)的(de)(de)單(dan)式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)即放大鏡(jing)(jing)(jing)(jing)(jing)(放大倍(bei)(bei)(bei)數常在10倍(bei)(bei)(bei)左(zuo)(zuo)右),構造(zao)復(fu)雜的(de)(de)單(dan)式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)為(wei)(wei)解剖顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(放大倍(bei)(bei)(bei)數在200左(zuo)(zuo)右)。在微(wei)(wei)(wei)(wei)(wei)(wei)生物(wu)學(xue)的(de)(de)研究中,主要(yao)是復(fu)式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)。其中以普通光學(xue)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(明視(shi)野顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing))最(zui)(zui)為(wei)(wei)常用。此外(wai),還有暗(an)視(shi)野顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)、相差顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)、熒(ying)光顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)、偏光顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)、紫外(wai)光顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)和倒(dao)置(zhi)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)等。非(fei)光學(xue)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)為(wei)(wei)電子顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)。
打疫苗箱接種(zhong)(zhong)(zhong)箱(xiang)(xiang)(xiang)分為固體(ti)菌(jun)種(zhong)(zhong)(zhong)接種(zhong)(zhong)(zhong)箱(xiang)(xiang)(xiang)和(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)個用(yong)木料和(he)玻(bo)(bo)璃制成(cheng)或由有機玻(bo)(bo)璃焊(han)接而成(cheng)的(de)密(mi)閉(bi)小(xiao)箱(xiang)(xiang)(xiang)。又分為雙人和(he)單人操(cao)作箱(xiang)(xiang)(xiang)。箱(xiang)(xiang)(xiang)體(ti)可(ke)大可(ke)小(xiao),一(yi)般箱(xiang)(xiang)(xiang)體(ti)長約143cm,寬86cm,總高154cm,支架76cm。箱(xiang)(xiang)(xiang)的(de)上部(bu)左右兩(liang)(liang)側(ce)各裝有兩(liang)(liang)扇(shan)能啟(qi)閉(bi)的(de)玻(bo)(bo)璃推拉門,方便(bian)菌(jun)種(zhong)(zhong)(zhong)進(jin)出。窗的(de)下部(bu)分別(bie)設有兩(liang)(liang)個直徑約13cm的(de)圓洞,兩(liang)(liang)洞的(de)中(zhong)心距離為52cm(同(tong)肩寬),洞口裝有帶松緊帶的(de)袖套,以防雙手(shou)在箱(xiang)(xiang)(xiang)內操(cao)作時,外界空氣進(jin)入(ru)箱(xiang)(xiang)(xiang)內造成(cheng)污(wu)染。操(cao)作時兩(liang)(liang)人相對(dui)而坐,雙手(shou)通過袖套伸入(ru)箱(xiang)(xiang)(xiang)內。箱(xiang)(xiang)(xiang)兩(liang)(liang)側(ce)最好(hao)也裝上玻(bo)(bo)璃,箱(xiang)(xiang)(xiang)頂部(bu)為木板或玻(bo)(bo)璃。箱(xiang)(xiang)(xiang)內頂部(bu)裝有紫外線殺(sha)菌(jun)燈(deng)和(he)照明用(yong)日光(guang)燈(deng)各一(yi)支。箱(xiang)(xiang)(xiang)體(ti)安裝木板或玻(bo)(bo)璃均(jun)可(ke),但要注意密(mi)封。
液體菌種(zhong)(zhong)(zhong)接種(zhong)(zhong)(zhong)箱(xiang)是專為移接液體菌種(zhong)(zhong)(zhong)而設計(ji)的(de)。比固體菌種(zhong)(zhong)(zhong)箱(xiang)窄長(chang),單側兩(liang)(liang)人操作。內設軌道和紫外(wai)線燈,箱(xiang)兩(liang)(liang)端開有高25cm,寬10cm的(de)長(chang)方形出(chu)(chu)口,方便菌種(zhong)(zhong)(zhong)進出(chu)(chu),洞口設有小推門。進出(chu)(chu)口下(xia)處設蒸汽源,接種(zhong)(zhong)(zhong)時用蒸汽封住進出(chu)(chu)口,以防雜菌進入箱(xiang)內。箱(xiang)背(bei)面設有液體菌種(zhong)(zhong)(zhong)移接管能(neng)進入的(de)小孔。
接(jie)(jie)種箱(xiang)(xiang)滅菌(jun)時,用(yong)紫外線照(zhao)射30min。如果沒(mei)有紫外線燈,可用(yong)甲醛和高錳酸鉀(甲醛10~14mL/m3+高錳酸鉀5~7g/m3空(kong)間(jian))熏蒸30min以上。使用(yong)時,先將所需物品(pin)和工具放入接(jie)(jie)種箱(xiang)(xiang)內,然后進(jin)行藥劑熏蒸和紫外線滅菌(jun),再按無菌(jun)操作(zuo)進(jin)行接(jie)(jie)種。接(jie)(jie)種箱(xiang)(xiang)的結構簡單,造價低廉,易消(xiao)毒滅菌(jun),操作(zuo)方便,而且人在箱(xiang)(xiang)外操作(zuo),氣(qi)溫較高時也能作(zuo)業(ye)。缺(que)點是進(jin)出(chu)培(pei)養(yang)基(ji)費工費時,每次接(jie)(jie)種前都需要進(jin)行滅菌(jun)。
冷藏柜 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。

