凈(jing)化(hua)工(gong)(gong)作臺是一(yi)種局部(bu)層(ceng)流(liu)裝置,能在局部(bu)形成高(gao)潔度的(de)工(gong)(gong)作環境。它由工(gong)(gong)作臺、過(guo)(guo)濾器、風(feng)機、靜壓箱和支撐體(ti)等組成,采用過(guo)(guo)濾空(kong)氣(qi)(qi)使(shi)工(gong)(gong)作臺操作區達(da)到凈(jing)化(hua)除菌(jun)(jun)的(de)目的(de)。室(shi)內(nei)空(kong)氣(qi)(qi)經(jing)預過(guo)(guo)濾器和高(gao)效過(guo)(guo)濾除塵(chen)后(hou)以(yi)垂直或水(shui)平層(ceng)流(liu)狀態通過(guo)(guo)工(gong)(gong)作臺的(de)操作區,由于(yu)空(kong)氣(qi)(qi)沒(mei)有渦(wo)流(liu),所以(yi),任何(he)一(yi)點灰塵(chen)或附(fu)著在灰塵(chen)上的(de)雜(za)菌(jun)(jun)都能被排(pai)除,不易向(xiang)別處(chu)擴散和轉(zhuan)移。因此,可使(shi)操作區保(bao)持無(wu)菌(jun)(jun)狀態。
與無茵作業室和注射箱相當,選擇廢氣處理業務臺含有業務水平好、作業非常方便、無茵作業療效好可信、無消毒劑化學劑對人體細胞為害、占用率規模小且可活動等特點。但如果放入無茵作業別墅地下室選擇,無茵作業療效好最佳。其弱項是價位高昂,預凈化器和高效、性價比最高凈化器還想要定存擦拭和替換。 高壓變壓器蒸汽加熱殺菌鍋高壓蒸(zheng)(zheng)汽(qi)滅(mie)菌(jun)鍋(guo)是一(yi)(yi)個(ge)密閉的(de)(de)、可(ke)以(yi)(yi)耐受一(yi)(yi)定壓力的(de)(de)雙層金屬鍋(guo)。鍋(guo)底或夾層內(nei)盛水,當水在鍋(guo)內(nei)沸(fei)騰時由于蒸(zheng)(zheng)汽(qi)不(bu)能逸出,使鍋(guo)內(nei)壓力逐漸升高,水的(de)(de)沸(fei)點(dian)和溫(wen)度可(ke)隨之升高,從而達到高溫(wen)滅(mie)菌(jun)的(de)(de)目的(de)(de)。一(yi)(yi)般在0.11MPa的(de)(de)壓力下(xia),121℃滅(mie)菌(jun)20~30min,包(bao)括芽(ya)孢在內(nei)的(de)(de)所(suo)有微生物均可(ke)被殺(sha)死。如果滅(mie)菌(jun)物品體積較大,蒸(zheng)(zheng)汽(qi)穿(chuan)透(tou)困難,可(ke)以(yi)(yi)適當提高蒸(zheng)(zheng)汽(qi)壓力或延長滅(mie)菌(jun)時間。
壓力力無菌鍋有水平、直列V型、手提箱箱式等多種不同形式,在細菌制品學檢測室,尤為普遍的是手提箱箱式和直列V型壓力力液體無菌鍋。和臥式儲罐無菌鍋相對比,壓力力無菌鍋的優有缺陷是無菌所要的時段短、可節約液體燃料、無菌徹底等。其有缺陷是售價超貴,無菌數量較小。 培養出箱培(pei)(pei)(pei)養(yang)(yang)箱是(shi)培(pei)(pei)(pei)養(yang)(yang)微(wei)(wei)生(sheng)(sheng)物的(de)(de)(de)專用設備(bei)。制熱式培(pei)(pei)(pei)養(yang)(yang)箱是(shi)由電爐絲和(he)溫(wen)(wen)度控(kong)制儀合(he)(he)成(cheng)的(de)(de)(de)固(gu)定(ding)體積的(de)(de)(de)恒(heng)溫(wen)(wen)培(pei)(pei)(pei)養(yang)(yang)裝(zhuang)置(zhi),大小規格(ge)不一。微(wei)(wei)生(sheng)(sheng)物實驗室常用的(de)(de)(de)培(pei)(pei)(pei)養(yang)(yang)箱工作(zuo)容積有(you)450×450×350mm3或650×500×500mm3,適用于(yu)室溫(wen)(wen)至60℃之間的(de)(de)(de)各類微(wei)(wei)生(sheng)(sheng)物培(pei)(pei)(pei)養(yang)(yang)。目前,隨著(zhu)科學(xue)水(shui)平的(de)(de)(de)發展,培(pei)(pei)(pei)養(yang)(yang)箱設備(bei)的(de)(de)(de)完(wan)善程度和(he)價格(ge)有(you)很(hen)大差別。有(you)各種結構(gou)合(he)(he)理、功能齊全的(de)(de)(de)培(pei)(pei)(pei)養(yang)(yang)箱,如恒(heng)溫(wen)(wen)培(pei)(pei)(pei)養(yang)(yang)箱、恒(heng)溫(wen)(wen)恒(heng)濕(shi)培(pei)(pei)(pei)養(yang)(yang)箱、低溫(wen)(wen)培(pei)(pei)(pei)養(yang)(yang)箱、微(wei)(wei)生(sheng)(sheng)物多用培(pei)(pei)(pei)養(yang)(yang)箱和(he)二氧化碳培(pei)(pei)(pei)養(yang)(yang)箱等。有(you)的(de)(de)(de)用計算機控(kong)制,可選擇多條時間線變換(huan)溫(wen)(wen)差,從而克服了環境溫(wen)(wen)度的(de)(de)(de)影響,一年四季均能達到培(pei)(pei)(pei)養(yang)(yang)要求的(de)(de)(de)溫(wen)(wen)度。
微(wei)生物多用培養箱是集加熱、制(zhi)冷和振蕩于一體的(de)微(wei)生物液體發酵裝(zhuang)置。工作室的(de)溫(wen)度(du)在15~50℃范圍(wei)(wei)內任意(yi)選(xuan)定,選(xuan)定后(hou)經溫(wen)控(kong)(kong)儀自動控(kong)(kong)制(zhi),保持(chi)工作室內恒溫(wen)。同時設有可控(kong)(kong)硅調速系統,振蕩機轉速可在1~220rpm范圍(wei)(wei)內任意(yi)調控(kong)(kong)。
粗糙箱干(gan)燥(zao)箱(xiang)(xiang)是用于除(chu)去潮濕物(wu)(wu)料內(nei)及器皿(min)內(nei)外(wai)(wai)水分或(huo)其它揮發性溶(rong)液的設備(bei)。類型很(hen)多,有(you)箱(xiang)(xiang)式(shi)、滾(gun)筒(tong)式(shi)、套間式(shi)、回轉(zhuan)式(shi)等。微生物(wu)(wu)學實(shi)驗(yan)室多用箱(xiang)(xiang)式(shi)干(gan)燥(zao)箱(xiang)(xiang),大小規(gui)格不(bu)一。工作室內(nei)配有(you)可活(huo)動的鐵絲網板,便于放置被干(gan)燥(zao)的物(wu)(wu)品。制熱(re)升溫(wen)(wen)式(shi)干(gan)燥(zao)箱(xiang)(xiang)也是有(you)電爐絲和溫(wen)(wen)度(du)控制儀組成,可調(diao)節溫(wen)(wen)度(du)從(cong)室溫(wen)(wen)至300℃任意選擇。有(you)的干(gan)燥(zao)箱(xiang)(xiang)采用導電溫(wen)(wen)度(du)計為敏感元件,配合晶體(ti)管(guan)和繼電器組成自動控制系統,克服(fu)了金屬管(guan)型熱(re)膨脹控制的缺點。此(ci)外(wai)(wai),還有(you)真空干(gan)燥(zao)箱(xiang)(xiang)(配有(you)真空泵和氣壓表),可在常壓或(huo)減壓下操(cao)作。
搖床
搖(yao)(yao)床(chuang)又稱搖(yao)(yao)瓶(ping)(ping)機(ji),它是培養好氣性微生(sheng)物的(de)(de)小型試驗設(she)備(bei)或(huo)作為種(zhong)子(zi)擴大培養之(zhi)用(yong),常用(yong)的(de)(de)搖(yao)(yao)床(chuang)有往復(fu)式(shi)(shi)和旋轉式(shi)(shi)兩種(zhong)。往復(fu)式(shi)(shi)搖(yao)(yao)床(chuang)的(de)(de)往復(fu)頻率(lv)一般(ban)在80~140次(ci)/min,沖(chong)程一般(ban)為5~14cm,如頻率(lv)過(guo)快、沖(chong)程過(guo)大或(huo)瓶(ping)(ping)內液(ye)(ye)體裝量(liang)過(guo)多,在搖(yao)(yao)動時(shi)液(ye)(ye)體會濺到(dao)包扎瓶(ping)(ping)口(kou)的(de)(de)紗布或(huo)棉(mian)塞上,導致雜(za)菌污染(ran),特別是啟(qi)動時(shi)更容易發生(sheng)這(zhe)種(zhong)情況。旋轉式(shi)(shi)搖(yao)(yao)床(chuang)的(de)(de)偏心距一般(ban)在3~6cm之(zhi)間,旋轉次(ci)數為60~300rpm。
放在搖床(chuang)上的(de)培養(yang)瓶(ping)(一般(ban)為三角瓶(ping))中的(de)發酵液所需(xu)要的(de)氧是由空氣(qi)經瓶(ping)口(kou)(kou)包(bao)扎的(de)紗(sha)布(一般(ban)8層)或(huo)棉(mian)塞通(tong)入的(de),所以氧的(de)傳遞與(yu)瓶(ping)口(kou)(kou)的(de)大小、瓶(ping)口(kou)(kou)的(de)幾何形狀、棉(mian)塞或(huo)紗(sha)布的(de)厚度(du)(du)和密(mi)度(du)(du)有(you)關。在通(tong)常情況下(xia),搖瓶(ping)的(de)氧吸(xi)收(shou)系數(shu)取決于(yu)搖床(chuang)的(de)特性和三角瓶(ping)的(de)裝樣量。
回轉式搖床是用曲柄原因驅動搖床作回轉運功,設備為鐵或實木的長方框子,有顆層至五層包裝箱,包裝箱內有圓洞備放養成瓶,孔中凸起一半圓形鉛筆,用為規定養成瓶并才能減少瓶的振動式,機械傳動裝置大部分主要采用兩級皮帶輪降速,替換變頻調速皮帶輪可轉變回轉聲音率。軸力輪上都有不一樣的軸力孔,以便自動調節軸力距。回轉式搖床的聲音率和軸力距的各個對氧的消化有看不出的影響力。 縮放視頻式搖床是采用縮放視頻的軸力軸使托板轉動,托板有顆層或二屋,都可以冷庫保溫隔熱板的表層板規格、鋁合金板或廚衛電器板制作。在3個軸力軸能裝有螺栓標準可變節下上,使托板實現標準。這樣的搖床結構的冗雜,造貴點。其益處是氧的傳遞數據較佳、電功率花費小、教育細胞培養液是不會濺到瓶口的繃帶上。 體視顯微鏡 微菌物學制品個人獨資戶很小,要代入高倍電子顯微鏡性能仔細觀察非常清楚同旁內角的個人獨資戶特性和生殖細胞組成部分。對此,在微菌物學制品學的哪項分析中,高倍電子顯微鏡就成為了不可以卻少的機器。顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)的種類很(hen)多,根據其(qi)結構,可(ke)以(yi)分(fen)為(wei)(wei)光(guang)(guang)(guang)(guang)學(xue)(xue)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)和非(fei)光(guang)(guang)(guang)(guang)學(xue)(xue)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)兩(liang)大(da)類。光(guang)(guang)(guang)(guang)學(xue)(xue)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)又可(ke)分(fen)為(wei)(wei)單(dan)(dan)(dan)式(shi)(shi)(shi)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)和復式(shi)(shi)(shi)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)。最簡單(dan)(dan)(dan)的單(dan)(dan)(dan)式(shi)(shi)(shi)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)即(ji)放(fang)大(da)鏡(jing)(jing)(jing)(jing)(jing)(放(fang)大(da)倍數(shu)常在(zai)(zai)10倍左右),構造復雜的單(dan)(dan)(dan)式(shi)(shi)(shi)顯(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)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(放(fang)大(da)倍數(shu)在(zai)(zai)200左右)。在(zai)(zai)微(wei)(wei)(wei)(wei)(wei)(wei)生(sheng)物學(xue)(xue)的研(yan)究中,主要(yao)是復式(shi)(shi)(shi)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)。其(qi)中以(yi)普通光(guang)(guang)(guang)(guang)學(xue)(xue)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(明(ming)視(shi)野顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing))最為(wei)(wei)常用。此外(wai),還(huan)有暗視(shi)野顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)、相差顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)、熒光(guang)(guang)(guang)(guang)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)、偏光(guang)(guang)(guang)(guang)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)、紫外(wai)光(guang)(guang)(guang)(guang)顯(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)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)等。非(fei)光(guang)(guang)(guang)(guang)學(xue)(xue)顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)為(wei)(wei)電(dian)子顯(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)。
接種疫苗箱接(jie)(jie)種箱(xiang)(xiang)分(fen)為固體菌種接(jie)(jie)種箱(xiang)(xiang)和液體菌種接(jie)(jie)種箱(xiang)(xiang)兩(liang)(liang)種。固體菌種接(jie)(jie)種箱(xiang)(xiang)是(shi)一個用(yong)(yong)木(mu)料和玻(bo)璃(li)制成或(huo)由有(you)(you)(you)機(ji)玻(bo)璃(li)焊接(jie)(jie)而(er)成的(de)(de)(de)密閉小箱(xiang)(xiang)。又分(fen)為雙人和單人操作箱(xiang)(xiang)。箱(xiang)(xiang)體可大(da)可小,一般箱(xiang)(xiang)體長約143cm,寬86cm,總高154cm,支架76cm。箱(xiang)(xiang)的(de)(de)(de)上部(bu)(bu)左(zuo)右兩(liang)(liang)側(ce)各裝(zhuang)(zhuang)有(you)(you)(you)兩(liang)(liang)扇能啟閉的(de)(de)(de)玻(bo)璃(li)推拉(la)門(men),方便菌種進(jin)(jin)出。窗的(de)(de)(de)下(xia)部(bu)(bu)分(fen)別設有(you)(you)(you)兩(liang)(liang)個直徑(jing)約13cm的(de)(de)(de)圓洞,兩(liang)(liang)洞的(de)(de)(de)中心距離為52cm(同肩(jian)寬),洞口裝(zhuang)(zhuang)有(you)(you)(you)帶(dai)松緊帶(dai)的(de)(de)(de)袖套,以(yi)防雙手(shou)在箱(xiang)(xiang)內(nei)操作時(shi),外界空氣進(jin)(jin)入箱(xiang)(xiang)內(nei)造(zao)成污染。操作時(shi)兩(liang)(liang)人相對而(er)坐,雙手(shou)通(tong)過袖套伸入箱(xiang)(xiang)內(nei)。箱(xiang)(xiang)兩(liang)(liang)側(ce)最好也(ye)裝(zhuang)(zhuang)上玻(bo)璃(li),箱(xiang)(xiang)頂部(bu)(bu)為木(mu)板(ban)(ban)或(huo)玻(bo)璃(li)。箱(xiang)(xiang)內(nei)頂部(bu)(bu)裝(zhuang)(zhuang)有(you)(you)(you)紫(zi)外線(xian)殺菌燈和照明(ming)用(yong)(yong)日光燈各一支。箱(xiang)(xiang)體安裝(zhuang)(zhuang)木(mu)板(ban)(ban)或(huo)玻(bo)璃(li)均可,但要注意密封。
液體菌(jun)(jun)(jun)(jun)種(zhong)接(jie)種(zhong)箱(xiang)是專為移(yi)接(jie)液體菌(jun)(jun)(jun)(jun)種(zhong)而設計的(de)。比固體菌(jun)(jun)(jun)(jun)種(zhong)箱(xiang)窄長(chang),單(dan)側(ce)兩人操作。內(nei)設軌道和紫外線燈,箱(xiang)兩端開有高(gao)25cm,寬10cm的(de)長(chang)方(fang)形(xing)出(chu)口(kou),方(fang)便菌(jun)(jun)(jun)(jun)種(zhong)進出(chu),洞口(kou)設有小推(tui)門。進出(chu)口(kou)下處(chu)設蒸汽源(yuan),接(jie)種(zhong)時用(yong)蒸汽封(feng)住進出(chu)口(kou),以防雜菌(jun)(jun)(jun)(jun)進入(ru)箱(xiang)內(nei)。箱(xiang)背(bei)面(mian)設有液體菌(jun)(jun)(jun)(jun)種(zhong)移(yi)接(jie)管(guan)能進入(ru)的(de)小孔。
接種(zhong)(zhong)(zhong)箱(xiang)滅(mie)菌(jun)時(shi),用(yong)(yong)紫外(wai)(wai)線(xian)照射30min。如果沒有紫外(wai)(wai)線(xian)燈,可用(yong)(yong)甲醛(quan)和高錳酸鉀(甲醛(quan)10~14mL/m3+高錳酸鉀5~7g/m3空間)熏蒸30min以(yi)上。使用(yong)(yong)時(shi),先將(jiang)所需(xu)物品和工具放(fang)入接種(zhong)(zhong)(zhong)箱(xiang)內,然后進(jin)(jin)行(xing)藥劑(ji)熏蒸和紫外(wai)(wai)線(xian)滅(mie)菌(jun),再按無菌(jun)操作(zuo)進(jin)(jin)行(xing)接種(zhong)(zhong)(zhong)。接種(zhong)(zhong)(zhong)箱(xiang)的結構簡單,造(zao)價低廉,易消毒滅(mie)菌(jun),操作(zuo)方便,而(er)且(qie)人在箱(xiang)外(wai)(wai)操作(zuo),氣溫較(jiao)高時(shi)也能作(zuo)業。缺點是(shi)進(jin)(jin)出(chu)培(pei)養基費工費時(shi),每次(ci)接種(zhong)(zhong)(zhong)前都(dou)需(xu)要進(jin)(jin)行(xing)滅(mie)菌(jun)。
冰柜 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。

