凈(jing)化工(gong)(gong)作(zuo)臺(tai)是一種局部(bu)(bu)層(ceng)(ceng)流裝置,能在局部(bu)(bu)形成(cheng)(cheng)高潔度的(de)工(gong)(gong)作(zuo)環境。它(ta)由工(gong)(gong)作(zuo)臺(tai)、過(guo)(guo)濾器(qi)、風機(ji)、靜(jing)壓箱(xiang)和(he)支撐體等(deng)組成(cheng)(cheng),采用(yong)過(guo)(guo)濾空(kong)氣(qi)使(shi)工(gong)(gong)作(zuo)臺(tai)操作(zuo)區達到凈(jing)化除(chu)菌(jun)(jun)的(de)目(mu)的(de)。室內空(kong)氣(qi)經預過(guo)(guo)濾器(qi)和(he)高效(xiao)過(guo)(guo)濾除(chu)塵(chen)后以垂(chui)直或(huo)水平層(ceng)(ceng)流狀態(tai)通過(guo)(guo)工(gong)(gong)作(zuo)臺(tai)的(de)操作(zuo)區,由于空(kong)氣(qi)沒有(you)渦流,所以,任(ren)何一點灰(hui)塵(chen)或(huo)附著在灰(hui)塵(chen)上的(de)雜菌(jun)(jun)都能被(bei)排除(chu),不易向(xiang)別處(chu)擴散和(he)轉移。因此,可(ke)使(shi)操作(zuo)區保持無菌(jun)(jun)狀態(tai)。
與沒有細菌室和育苗箱相對較,適用水凈化崗位臺擁有崗位必備條件好、運用省事、沒有細菌結果耐用、無紫外線燈消毒化劑對人們導致、侵占空間小且可手機等問題。倘若投入沒有細菌別墅地下室適用,沒有細菌結果更穩。其問題是多少錢高昂,預篩選器和高效益篩選器還必須要定期存款家電清洗和拆卸。 低壓水蒸氣過濾除菌鍋高(gao)壓蒸汽(qi)滅(mie)(mie)菌(jun)(jun)(jun)鍋是一個密閉的、可以耐受一定壓力(li)(li)的雙層(ceng)(ceng)金(jin)屬鍋。鍋底或夾層(ceng)(ceng)內盛水(shui),當水(shui)在(zai)(zai)鍋內沸(fei)騰時由于蒸汽(qi)不能逸出,使鍋內壓力(li)(li)逐漸升(sheng)高(gao),水(shui)的沸(fei)點和溫(wen)度可隨(sui)之升(sheng)高(gao),從(cong)而達到高(gao)溫(wen)滅(mie)(mie)菌(jun)(jun)(jun)的目的。一般在(zai)(zai)0.11MPa的壓力(li)(li)下,121℃滅(mie)(mie)菌(jun)(jun)(jun)20~30min,包括芽孢在(zai)(zai)內的所有(you)微生物均可被殺(sha)死。如(ru)果滅(mie)(mie)菌(jun)(jun)(jun)物品體積較大(da),蒸汽(qi)穿透困難(nan),可以適當提高(gao)蒸汽(qi)壓力(li)(li)或延長滅(mie)(mie)菌(jun)(jun)(jun)時間(jian)。
高壓低壓電力過濾除菌方法鍋有水平、立柱式、臺式式等許多類別,在微生物培養基學學實驗性室,相對比較最常用的是臺式式和立柱式高壓低壓電力飽和蒸汽過濾除菌方法鍋。和自然壓過濾除菌方法鍋優于,高壓低壓電力過濾除菌方法鍋的優勢是過濾除菌方法需用的周期短、節省清潔燃料、過濾除菌方法徹底刪除文件等。其弱項是的價格最貴,過濾除菌方法電容量較小。 培養出來箱培(pei)(pei)(pei)養(yang)箱(xiang)(xiang)(xiang)是培(pei)(pei)(pei)養(yang)微(wei)(wei)生物(wu)(wu)的(de)(de)(de)專用設備。制熱(re)式培(pei)(pei)(pei)養(yang)箱(xiang)(xiang)(xiang)是由電爐絲和溫(wen)(wen)(wen)度(du)控制儀(yi)合(he)成的(de)(de)(de)固定體積的(de)(de)(de)恒(heng)溫(wen)(wen)(wen)培(pei)(pei)(pei)養(yang)裝(zhuang)置,大小規格不一(yi)。微(wei)(wei)生物(wu)(wu)實驗室(shi)常用的(de)(de)(de)培(pei)(pei)(pei)養(yang)箱(xiang)(xiang)(xiang)工作容積有(you)450×450×350mm3或650×500×500mm3,適用于室(shi)溫(wen)(wen)(wen)至60℃之間(jian)的(de)(de)(de)各類微(wei)(wei)生物(wu)(wu)培(pei)(pei)(pei)養(yang)。目前,隨著科學水平的(de)(de)(de)發展,培(pei)(pei)(pei)養(yang)箱(xiang)(xiang)(xiang)設備的(de)(de)(de)完善程(cheng)度(du)和價格有(you)很大差別。有(you)各種結構合(he)理(li)、功能(neng)齊全(quan)的(de)(de)(de)培(pei)(pei)(pei)養(yang)箱(xiang)(xiang)(xiang),如(ru)恒(heng)溫(wen)(wen)(wen)培(pei)(pei)(pei)養(yang)箱(xiang)(xiang)(xiang)、恒(heng)溫(wen)(wen)(wen)恒(heng)濕培(pei)(pei)(pei)養(yang)箱(xiang)(xiang)(xiang)、低(di)溫(wen)(wen)(wen)培(pei)(pei)(pei)養(yang)箱(xiang)(xiang)(xiang)、微(wei)(wei)生物(wu)(wu)多用培(pei)(pei)(pei)養(yang)箱(xiang)(xiang)(xiang)和二氧化碳(tan)培(pei)(pei)(pei)養(yang)箱(xiang)(xiang)(xiang)等。有(you)的(de)(de)(de)用計算機控制,可選(xuan)擇多條時間(jian)線變換溫(wen)(wen)(wen)差,從(cong)而克(ke)服(fu)了環境溫(wen)(wen)(wen)度(du)的(de)(de)(de)影響,一(yi)年四(si)季均能(neng)達到(dao)培(pei)(pei)(pei)養(yang)要求的(de)(de)(de)溫(wen)(wen)(wen)度(du)。
微生(sheng)物多用(yong)培(pei)養箱是集(ji)加熱(re)、制冷和振(zhen)蕩于(yu)一體的(de)微生(sheng)物液(ye)體發酵裝置。工(gong)作室的(de)溫(wen)度在(zai)(zai)15~50℃范圍內(nei)任(ren)意選定,選定后(hou)經溫(wen)控(kong)儀(yi)自(zi)動控(kong)制,保持工(gong)作室內(nei)恒溫(wen)。同時設有可控(kong)硅調速系統,振(zhen)蕩機轉速可在(zai)(zai)1~220rpm范圍內(nei)任(ren)意調控(kong)。
變干箱干燥(zao)箱(xiang)是(shi)用于除去潮濕物(wu)料內(nei)及器(qi)皿內(nei)外水分或其它揮發(fa)性溶液(ye)的(de)(de)設(she)備。類型很多(duo)(duo),有(you)箱(xiang)式(shi)、滾筒式(shi)、套間式(shi)、回轉式(shi)等。微生物(wu)學實驗(yan)室(shi)多(duo)(duo)用箱(xiang)式(shi)干燥(zao)箱(xiang),大小規格不(bu)一。工作(zuo)室(shi)內(nei)配有(you)可(ke)活動的(de)(de)鐵(tie)絲網板,便于放置被干燥(zao)的(de)(de)物(wu)品(pin)。制熱升(sheng)溫式(shi)干燥(zao)箱(xiang)也是(shi)有(you)電爐絲和(he)溫度控制儀組成(cheng),可(ke)調節溫度從(cong)室(shi)溫至300℃任意選(xuan)擇(ze)。有(you)的(de)(de)干燥(zao)箱(xiang)采用導電溫度計為敏感元(yuan)件,配合晶體(ti)管和(he)繼(ji)電器(qi)組成(cheng)自動控制系統,克服了金屬管型熱膨脹控制的(de)(de)缺點。此外,還有(you)真空干燥(zao)箱(xiang)(配有(you)真空泵和(he)氣壓表(biao)),可(ke)在常壓或減壓下(xia)操作(zuo)。
搖床
搖(yao)床(chuang)又稱搖(yao)瓶(ping)機,它是培養(yang)好氣(qi)性微生(sheng)物的小型(xing)試驗設備(bei)或作為(wei)(wei)種(zhong)子擴大培養(yang)之(zhi)用(yong),常用(yong)的搖(yao)床(chuang)有往(wang)復式和(he)旋轉(zhuan)(zhuan)式兩種(zhong)。往(wang)復式搖(yao)床(chuang)的往(wang)復頻(pin)率(lv)一般在(zai)80~140次/min,沖(chong)程(cheng)一般為(wei)(wei)5~14cm,如頻(pin)率(lv)過(guo)快、沖(chong)程(cheng)過(guo)大或瓶(ping)內液(ye)體(ti)裝量過(guo)多,在(zai)搖(yao)動時(shi)液(ye)體(ti)會(hui)濺到包扎瓶(ping)口的紗布或棉塞(sai)上,導致雜菌污(wu)染,特別(bie)是啟動時(shi)更容易(yi)發生(sheng)這種(zhong)情況。旋轉(zhuan)(zhuan)式搖(yao)床(chuang)的偏心距一般在(zai)3~6cm之(zhi)間,旋轉(zhuan)(zhuan)次數為(wei)(wei)60~300rpm。
放在搖(yao)床(chuang)(chuang)上(shang)的(de)(de)培養瓶(一(yi)般(ban)為三角(jiao)瓶)中(zhong)的(de)(de)發酵(jiao)液所需要的(de)(de)氧是由空氣經(jing)瓶口(kou)包扎的(de)(de)紗布(一(yi)般(ban)8層)或棉塞通入(ru)的(de)(de),所以氧的(de)(de)傳遞與(yu)瓶口(kou)的(de)(de)大(da)小、瓶口(kou)的(de)(de)幾何(he)形狀、棉塞或紗布的(de)(de)厚度和密度有(you)關。在通常情(qing)況(kuang)下,搖(yao)瓶的(de)(de)氧吸(xi)收系(xi)數(shu)取(qu)決于搖(yao)床(chuang)(chuang)的(de)(de)特性和三角(jiao)瓶的(de)(de)裝樣量(liang)。
循環往返式搖床是靈活運用曲柄道理起到搖床作循環往返動作,外殼為鐵或鐵質的長方框子,有塊層至三種托板,托板內有通風孔備放養育瓶,孔中外凸1個半圓形橡膠,用在固定不變養育瓶并少瓶的震動幅度,傳動鏈醫療機構一半進行中級輸送帶輪加速,更改調速器輸送帶輪可改善循環往返率。反力輪上打有其他的反力孔,能夠調節器反力距。循環往返式搖床的率和反力距的強弱對氧的吸取有很明顯的影向。 縮放式搖床是利用率縮放的軸力軸使拖盤甩動,拖盤有層或2層,可以用不銹不銹鋼圓管板、蜂窩鋁板或廚衛電器板造成。在三大軸力軸上用有螺絲調節器節升降,使拖盤堅持關卡。這個搖床組成部分很復雜,造價格高。其缺點有哪些是氧的傳達好點、熱效率總量小、陪養基不易濺到瓶口的沙布上。 光學顯微鏡 微動物個人用戶細微,就必須利用自身高倍高倍顯微鏡才能夠考察清析所以說的個人用戶狀態和體細胞形式。所以說,在微動物學的每一項實驗中,高倍高倍顯微鏡就為無可已損壞的工具軟件。顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)的(de)種類很多,根據(ju)其(qi)結構,可以(yi)(yi)分為(wei)(wei)光(guang)學(xue)(xue)(xue)(xue)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)和非光(guang)學(xue)(xue)(xue)(xue)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)兩大(da)(da)(da)(da)類。光(guang)學(xue)(xue)(xue)(xue)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)又可分為(wei)(wei)單式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)和復(fu)式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)。最(zui)簡單的(de)單式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)即放(fang)(fang)(fang)大(da)(da)(da)(da)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(放(fang)(fang)(fang)大(da)(da)(da)(da)倍(bei)數常在10倍(bei)左(zuo)右(you)),構造復(fu)雜(za)的(de)單式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)為(wei)(wei)解剖顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(放(fang)(fang)(fang)大(da)(da)(da)(da)倍(bei)數在200左(zuo)右(you))。在微(wei)(wei)(wei)(wei)生(sheng)物學(xue)(xue)(xue)(xue)的(de)研(yan)究中,主要是(shi)復(fu)式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)。其(qi)中以(yi)(yi)普(pu)通光(guang)學(xue)(xue)(xue)(xue)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(明視(shi)野顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing))最(zui)為(wei)(wei)常用。此外,還(huan)有暗(an)視(shi)野顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)、相差(cha)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)、熒光(guang)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)、偏(pian)光(guang)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)、紫外光(guang)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)和倒置顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)等(deng)。非光(guang)學(xue)(xue)(xue)(xue)顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)為(wei)(wei)電子顯(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)。
育苗箱接種(zhong)(zhong)(zhong)箱(xiang)(xiang)(xiang)分(fen)為(wei)(wei)固(gu)體(ti)(ti)菌種(zhong)(zhong)(zhong)接種(zhong)(zhong)(zhong)箱(xiang)(xiang)(xiang)和(he)(he)液體(ti)(ti)菌種(zhong)(zhong)(zhong)接種(zhong)(zhong)(zhong)箱(xiang)(xiang)(xiang)兩(liang)種(zhong)(zhong)(zhong)。固(gu)體(ti)(ti)菌種(zhong)(zhong)(zhong)接種(zhong)(zhong)(zhong)箱(xiang)(xiang)(xiang)是一個用(yong)木料(liao)和(he)(he)玻(bo)璃制成(cheng)或(huo)(huo)由有機玻(bo)璃焊接而(er)成(cheng)的(de)密(mi)閉小箱(xiang)(xiang)(xiang)。又分(fen)為(wei)(wei)雙人(ren)(ren)(ren)和(he)(he)單(dan)人(ren)(ren)(ren)操作箱(xiang)(xiang)(xiang)。箱(xiang)(xiang)(xiang)體(ti)(ti)可大可小,一般箱(xiang)(xiang)(xiang)體(ti)(ti)長約143cm,寬(kuan)86cm,總(zong)高(gao)154cm,支架76cm。箱(xiang)(xiang)(xiang)的(de)上部(bu)左(zuo)右(you)兩(liang)側各裝(zhuang)有兩(liang)扇能啟(qi)閉的(de)玻(bo)璃推(tui)拉門(men),方便菌種(zhong)(zhong)(zhong)進(jin)(jin)出(chu)。窗的(de)下部(bu)分(fen)別設有兩(liang)個直徑約13cm的(de)圓洞(dong)(dong),兩(liang)洞(dong)(dong)的(de)中心(xin)距(ju)離為(wei)(wei)52cm(同(tong)肩寬(kuan)),洞(dong)(dong)口裝(zhuang)有帶松緊(jin)帶的(de)袖(xiu)套,以防雙手在箱(xiang)(xiang)(xiang)內操作時,外(wai)界空氣進(jin)(jin)入箱(xiang)(xiang)(xiang)內造成(cheng)污染。操作時兩(liang)人(ren)(ren)(ren)相對而(er)坐(zuo),雙手通過袖(xiu)套伸入箱(xiang)(xiang)(xiang)內。箱(xiang)(xiang)(xiang)兩(liang)側最好也裝(zhuang)上玻(bo)璃,箱(xiang)(xiang)(xiang)頂部(bu)為(wei)(wei)木板(ban)(ban)或(huo)(huo)玻(bo)璃。箱(xiang)(xiang)(xiang)內頂部(bu)裝(zhuang)有紫外(wai)線殺(sha)菌燈和(he)(he)照明用(yong)日光(guang)燈各一支。箱(xiang)(xiang)(xiang)體(ti)(ti)安裝(zhuang)木板(ban)(ban)或(huo)(huo)玻(bo)璃均可,但(dan)要注意密(mi)封。
液(ye)體(ti)菌(jun)種接(jie)(jie)種箱(xiang)(xiang)(xiang)是專為移接(jie)(jie)液(ye)體(ti)菌(jun)種而設(she)(she)(she)計的(de)。比固體(ti)菌(jun)種箱(xiang)(xiang)(xiang)窄長,單側兩人操作。內設(she)(she)(she)軌(gui)道和紫外線燈,箱(xiang)(xiang)(xiang)兩端開有(you)高25cm,寬10cm的(de)長方形出(chu)(chu)(chu)口,方便菌(jun)種進(jin)(jin)出(chu)(chu)(chu),洞口設(she)(she)(she)有(you)小推(tui)門。進(jin)(jin)出(chu)(chu)(chu)口下處設(she)(she)(she)蒸(zheng)汽源(yuan),接(jie)(jie)種時用蒸(zheng)汽封住進(jin)(jin)出(chu)(chu)(chu)口,以防雜菌(jun)進(jin)(jin)入箱(xiang)(xiang)(xiang)內。箱(xiang)(xiang)(xiang)背面設(she)(she)(she)有(you)液(ye)體(ti)菌(jun)種移接(jie)(jie)管能(neng)進(jin)(jin)入的(de)小孔。
接(jie)種箱(xiang)滅(mie)菌時(shi)(shi),用(yong)紫(zi)外(wai)線照射30min。如果沒有紫(zi)外(wai)線燈,可(ke)用(yong)甲(jia)醛和高(gao)錳酸鉀(jia)(甲(jia)醛10~14mL/m3+高(gao)錳酸鉀(jia)5~7g/m3空間)熏蒸(zheng)30min以上。使用(yong)時(shi)(shi),先將所需物品(pin)和工(gong)具(ju)放入接(jie)種箱(xiang)內,然后進(jin)(jin)行藥劑(ji)熏蒸(zheng)和紫(zi)外(wai)線滅(mie)菌,再按無菌操(cao)作進(jin)(jin)行接(jie)種。接(jie)種箱(xiang)的結構簡單,造價低廉(lian),易消(xiao)毒滅(mie)菌,操(cao)作方便,而且人在箱(xiang)外(wai)操(cao)作,氣溫較高(gao)時(shi)(shi)也(ye)能作業。缺點是進(jin)(jin)出培(pei)養基(ji)費工(gong)費時(shi)(shi),每次接(jie)種前(qian)都需要(yao)進(jin)(jin)行滅(mie)菌。
墻上 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。