凈(jing)化(hua)工(gong)作(zuo)臺(tai)是一(yi)種局部層流(liu)裝置,能(neng)在局部形(xing)成高(gao)潔度的(de)(de)工(gong)作(zuo)環(huan)境。它由工(gong)作(zuo)臺(tai)、過(guo)濾(lv)器、風機、靜(jing)壓箱(xiang)和(he)支撐體等組(zu)成,采用(yong)過(guo)濾(lv)空氣(qi)(qi)使(shi)(shi)工(gong)作(zuo)臺(tai)操作(zuo)區(qu)達到凈(jing)化(hua)除(chu)(chu)菌的(de)(de)目的(de)(de)。室內(nei)空氣(qi)(qi)經預過(guo)濾(lv)器和(he)高(gao)效過(guo)濾(lv)除(chu)(chu)塵后以垂直(zhi)或(huo)水平層流(liu)狀態通過(guo)工(gong)作(zuo)臺(tai)的(de)(de)操作(zuo)區(qu),由于空氣(qi)(qi)沒有渦流(liu),所以,任何一(yi)點(dian)灰(hui)塵或(huo)附著在灰(hui)塵上的(de)(de)雜菌都(dou)能(neng)被排除(chu)(chu),不易向別處擴散和(he)轉移。因此,可使(shi)(shi)操作(zuo)區(qu)保(bao)持(chi)無菌狀態。
與無茵檢測室和接種疫苗箱會比較,動用凈化器崗位臺有崗位標準好、基本操作有利、無茵檢測郊果可以信賴、無刷洗血藥對身休為害、利用率戶型面積小且可挪動等利弊。若是 存放在無茵檢測房間內動用,無茵檢測郊果好。其利弊是房價貴,預過濾清潔程序器和效率高過濾清潔程序器還都要按時刷洗和更新。 油田蒸汽加熱殺菌鍋高(gao)壓蒸汽(qi)(qi)滅(mie)菌(jun)鍋(guo)(guo)是一個密閉(bi)的(de)(de)、可以耐受(shou)一定壓力的(de)(de)雙層金屬鍋(guo)(guo)。鍋(guo)(guo)底或夾層內盛(sheng)水(shui)(shui),當水(shui)(shui)在(zai)鍋(guo)(guo)內沸騰時由于蒸汽(qi)(qi)不能逸出,使鍋(guo)(guo)內壓力逐漸升高(gao),水(shui)(shui)的(de)(de)沸點(dian)和溫(wen)度可隨之升高(gao),從而(er)達到高(gao)溫(wen)滅(mie)菌(jun)的(de)(de)目的(de)(de)。一般在(zai)0.11MPa的(de)(de)壓力下,121℃滅(mie)菌(jun)20~30min,包括芽孢(bao)在(zai)內的(de)(de)所有(you)微生(sheng)物(wu)(wu)均可被(bei)殺死。如果滅(mie)菌(jun)物(wu)(wu)品(pin)體(ti)積較大,蒸汽(qi)(qi)穿透困難,可以適當提(ti)高(gao)蒸汽(qi)(qi)壓力或延長滅(mie)菌(jun)時間。
進行高壓變壓器力過濾除菌鍋有柜式、落地式、手堤式等三品種型,在微動物學調查室,最經常用的是手堤式和落地式進行高壓變壓器力空氣壓縮過濾除菌鍋。和自然壓過濾除菌鍋好于,進行高壓變壓器力過濾除菌鍋的短處是過濾除菌要求的準確時間太快、浪費然料、過濾除菌徹徹底底等。其短處是售價比較貴,過濾除菌電容量較小。 培育箱培(pei)(pei)養(yang)箱(xiang)是(shi)培(pei)(pei)養(yang)微(wei)生(sheng)(sheng)(sheng)物(wu)的(de)專用設(she)備(bei)。制熱式培(pei)(pei)養(yang)箱(xiang)是(shi)由(you)電爐絲和溫(wen)(wen)度(du)控(kong)制儀合成的(de)固定體積的(de)恒溫(wen)(wen)培(pei)(pei)養(yang)裝置,大小(xiao)規格不一(yi)。微(wei)生(sheng)(sheng)(sheng)物(wu)實驗室常用的(de)培(pei)(pei)養(yang)箱(xiang)工作容積有450×450×350mm3或650×500×500mm3,適用于室溫(wen)(wen)至60℃之間(jian)的(de)各類微(wei)生(sheng)(sheng)(sheng)物(wu)培(pei)(pei)養(yang)。目前(qian),隨著科(ke)學水平的(de)發展,培(pei)(pei)養(yang)箱(xiang)設(she)備(bei)的(de)完(wan)善程度(du)和價格有很大差(cha)別。有各種結構(gou)合理、功能齊全的(de)培(pei)(pei)養(yang)箱(xiang),如恒溫(wen)(wen)培(pei)(pei)養(yang)箱(xiang)、恒溫(wen)(wen)恒濕培(pei)(pei)養(yang)箱(xiang)、低溫(wen)(wen)培(pei)(pei)養(yang)箱(xiang)、微(wei)生(sheng)(sheng)(sheng)物(wu)多用培(pei)(pei)養(yang)箱(xiang)和二(er)氧化碳培(pei)(pei)養(yang)箱(xiang)等(deng)。有的(de)用計(ji)算(suan)機控(kong)制,可選擇多條時間(jian)線變換溫(wen)(wen)差(cha),從而克服了環境溫(wen)(wen)度(du)的(de)影響,一(yi)年四季均能達(da)到培(pei)(pei)養(yang)要(yao)求的(de)溫(wen)(wen)度(du)。
微生物多用培養箱是集(ji)加(jia)熱、制冷和振蕩于一體的(de)微生物液體發(fa)酵裝置。工(gong)作室的(de)溫度在(zai)15~50℃范(fan)圍(wei)內任意(yi)(yi)選(xuan)定,選(xuan)定后(hou)經溫控(kong)(kong)(kong)儀自動(dong)控(kong)(kong)(kong)制,保持(chi)工(gong)作室內恒溫。同時設有可控(kong)(kong)(kong)硅調速系統,振蕩機(ji)轉速可在(zai)1~220rpm范(fan)圍(wei)內任意(yi)(yi)調控(kong)(kong)(kong)。
缺水箱干燥(zao)(zao)(zao)箱(xiang)(xiang)是用(yong)于除去潮濕(shi)物(wu)料內(nei)(nei)及器(qi)皿內(nei)(nei)外(wai)水分或其它揮發(fa)性溶液的(de)設備。類(lei)型很多(duo),有(you)(you)箱(xiang)(xiang)式(shi)、滾筒(tong)式(shi)、套間式(shi)、回轉式(shi)等。微生物(wu)學(xue)實驗室多(duo)用(yong)箱(xiang)(xiang)式(shi)干燥(zao)(zao)(zao)箱(xiang)(xiang),大小(xiao)規格不一。工作室內(nei)(nei)配(pei)(pei)有(you)(you)可(ke)(ke)活動(dong)的(de)鐵絲(si)(si)網板,便于放置(zhi)被干燥(zao)(zao)(zao)的(de)物(wu)品(pin)。制熱升溫式(shi)干燥(zao)(zao)(zao)箱(xiang)(xiang)也是有(you)(you)電(dian)爐絲(si)(si)和(he)(he)溫度(du)控制儀組成,可(ke)(ke)調節溫度(du)從室溫至300℃任意選擇。有(you)(you)的(de)干燥(zao)(zao)(zao)箱(xiang)(xiang)采用(yong)導(dao)電(dian)溫度(du)計(ji)為敏(min)感元件,配(pei)(pei)合(he)晶體管和(he)(he)繼電(dian)器(qi)組成自動(dong)控制系(xi)統,克服了金屬(shu)管型熱膨脹控制的(de)缺(que)點(dian)。此(ci)外(wai),還有(you)(you)真(zhen)空(kong)干燥(zao)(zao)(zao)箱(xiang)(xiang)(配(pei)(pei)有(you)(you)真(zhen)空(kong)泵(beng)和(he)(he)氣壓(ya)表),可(ke)(ke)在常壓(ya)或減壓(ya)下操作。
搖床
搖(yao)(yao)床又(you)稱搖(yao)(yao)瓶(ping)(ping)機,它是培養好氣性微生物的小型試驗設備或(huo)(huo)作為種子擴大(da)培養之用(yong),常用(yong)的搖(yao)(yao)床有往復(fu)式和(he)旋(xuan)轉(zhuan)式兩種。往復(fu)式搖(yao)(yao)床的往復(fu)頻率(lv)一(yi)般(ban)在(zai)80~140次/min,沖(chong)(chong)程一(yi)般(ban)為5~14cm,如(ru)頻率(lv)過(guo)(guo)快、沖(chong)(chong)程過(guo)(guo)大(da)或(huo)(huo)瓶(ping)(ping)內液(ye)體裝量過(guo)(guo)多(duo),在(zai)搖(yao)(yao)動時(shi)液(ye)體會濺到包扎(zha)瓶(ping)(ping)口的紗布或(huo)(huo)棉塞上,導致雜菌污染(ran),特(te)別是啟(qi)動時(shi)更(geng)容易發(fa)生這種情(qing)況。旋(xuan)轉(zhuan)式搖(yao)(yao)床的偏(pian)心距一(yi)般(ban)在(zai)3~6cm之間,旋(xuan)轉(zhuan)次數為60~300rpm。
放在搖床(chuang)上的(de)(de)(de)培養瓶(ping)(一般(ban)為(wei)三角瓶(ping))中(zhong)的(de)(de)(de)發酵液(ye)所需要的(de)(de)(de)氧(yang)是(shi)由空氣經瓶(ping)口(kou)(kou)包(bao)扎的(de)(de)(de)紗布(bu)(一般(ban)8層)或棉(mian)塞(sai)通入(ru)的(de)(de)(de),所以氧(yang)的(de)(de)(de)傳遞與瓶(ping)口(kou)(kou)的(de)(de)(de)大小、瓶(ping)口(kou)(kou)的(de)(de)(de)幾(ji)何形(xing)狀、棉(mian)塞(sai)或紗布(bu)的(de)(de)(de)厚度和(he)密度有關。在通常(chang)情況(kuang)下(xia),搖瓶(ping)的(de)(de)(de)氧(yang)吸收(shou)系(xi)數(shu)取決于搖床(chuang)的(de)(de)(de)特性和(he)三角瓶(ping)的(de)(de)(de)裝樣量。
回轉式式搖床是應用曲柄設計原理帶領搖床作回轉式活動,屏幕為鋼制或實木的長方框子,有個層至五層塑料托盤價格,塑料托盤價格上方孔備放培養瓶,孔中凸起一種三邊形形橡膠,加以固定位置培養瓶并縮短瓶的震動幅度,轉動部門通常情況下按照特殊牛的傳動帶輪低速,更改控速牛的傳動帶輪可引響回轉式幀率。剪力輪輪輪上會開不同于的剪力輪輪孔,方能上下調整剪力輪輪距。回轉式式搖床的幀率和剪力輪輪距的程度對氧的吸附有顯然的引響。 電動機式搖床是應用電動機的剪力距軸使拖盤跳動,拖盤全是層或多層,該用不銹板材、鋁塑板或實木板制造廠。在4個剪力距軸里裝有聯接調節節上上下下,使拖盤提高關卡。本身搖床結構的繁復,造較貴。其優越性是氧的分享盡量、功效損耗小、塑造培養基的配制不易濺到瓶口的醫用紗布上。 顯微鏡觀察 動物學個頭小,要只依靠高倍顯微鏡觀察才會檢查明白患者的個頭底部形態和細胞系組成。由此,在動物學學的相關研發中,高倍顯微鏡觀察就是不能不缺失的的工具。顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)的(de)種類很多,根據其結構,可(ke)以分為(wei)(wei)光(guang)學顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)和非光(guang)學顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)兩大類。光(guang)學顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)又可(ke)分為(wei)(wei)單(dan)(dan)式顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)和復式顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)。最簡單(dan)(dan)的(de)單(dan)(dan)式顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)即放(fang)大鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(放(fang)大倍數(shu)常在(zai)10倍左(zuo)(zuo)右),構造復雜的(de)單(dan)(dan)式顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)為(wei)(wei)解剖顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(放(fang)大倍數(shu)在(zai)200左(zuo)(zuo)右)。在(zai)微(wei)(wei)(wei)(wei)(wei)生物(wu)學的(de)研(yan)究中(zhong)(zhong),主要(yao)是復式顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)。其中(zhong)(zhong)以普通(tong)光(guang)學顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(明視(shi)野顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing))最為(wei)(wei)常用(yong)。此外,還有暗視(shi)野顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)、相(xiang)差顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)、熒(ying)光(guang)顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)、偏光(guang)顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)、紫外光(guang)顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)和倒(dao)置顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)等。非光(guang)學顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)為(wei)(wei)電子顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)(jing)。
育苗箱接(jie)種(zhong)(zhong)箱(xiang)(xiang)(xiang)分(fen)為固體菌(jun)種(zhong)(zhong)接(jie)種(zhong)(zhong)箱(xiang)(xiang)(xiang)和(he)(he)(he)液(ye)體菌(jun)種(zhong)(zhong)接(jie)種(zhong)(zhong)箱(xiang)(xiang)(xiang)兩(liang)(liang)種(zhong)(zhong)。固體菌(jun)種(zhong)(zhong)接(jie)種(zhong)(zhong)箱(xiang)(xiang)(xiang)是一個(ge)用木(mu)料和(he)(he)(he)玻(bo)(bo)璃制成(cheng)或(huo)(huo)由有(you)(you)機玻(bo)(bo)璃焊接(jie)而成(cheng)的(de)(de)(de)密閉(bi)小(xiao)箱(xiang)(xiang)(xiang)。又分(fen)為雙(shuang)人(ren)和(he)(he)(he)單人(ren)操作(zuo)箱(xiang)(xiang)(xiang)。箱(xiang)(xiang)(xiang)體可大(da)可小(xiao),一般箱(xiang)(xiang)(xiang)體長約143cm,寬(kuan)86cm,總高154cm,支(zhi)架(jia)76cm。箱(xiang)(xiang)(xiang)的(de)(de)(de)上部左右兩(liang)(liang)側(ce)各裝(zhuang)有(you)(you)兩(liang)(liang)扇能啟閉(bi)的(de)(de)(de)玻(bo)(bo)璃推(tui)拉門,方(fang)便菌(jun)種(zhong)(zhong)進(jin)出(chu)。窗的(de)(de)(de)下部分(fen)別設有(you)(you)兩(liang)(liang)個(ge)直徑約13cm的(de)(de)(de)圓洞(dong),兩(liang)(liang)洞(dong)的(de)(de)(de)中心距離(li)為52cm(同肩寬(kuan)),洞(dong)口裝(zhuang)有(you)(you)帶(dai)(dai)松緊帶(dai)(dai)的(de)(de)(de)袖套(tao),以防雙(shuang)手(shou)在箱(xiang)(xiang)(xiang)內(nei)操作(zuo)時,外界空(kong)氣進(jin)入(ru)箱(xiang)(xiang)(xiang)內(nei)造成(cheng)污染。操作(zuo)時兩(liang)(liang)人(ren)相對而坐,雙(shuang)手(shou)通過袖套(tao)伸入(ru)箱(xiang)(xiang)(xiang)內(nei)。箱(xiang)(xiang)(xiang)兩(liang)(liang)側(ce)最好也(ye)裝(zhuang)上玻(bo)(bo)璃,箱(xiang)(xiang)(xiang)頂部為木(mu)板或(huo)(huo)玻(bo)(bo)璃。箱(xiang)(xiang)(xiang)內(nei)頂部裝(zhuang)有(you)(you)紫外線殺菌(jun)燈(deng)和(he)(he)(he)照明(ming)用日光燈(deng)各一支(zhi)。箱(xiang)(xiang)(xiang)體安裝(zhuang)木(mu)板或(huo)(huo)玻(bo)(bo)璃均(jun)可,但要(yao)注意(yi)密封。
液(ye)體菌種(zhong)接(jie)種(zhong)箱(xiang)是專為移接(jie)液(ye)體菌種(zhong)而設(she)計的。比固體菌種(zhong)箱(xiang)窄長,單(dan)側(ce)兩人操作。內設(she)軌道(dao)和紫外(wai)線燈(deng),箱(xiang)兩端開有高(gao)25cm,寬(kuan)10cm的長方形出(chu)口,方便菌種(zhong)進(jin)出(chu),洞口設(she)有小(xiao)推(tui)門。進(jin)出(chu)口下處設(she)蒸汽源,接(jie)種(zhong)時(shi)用蒸汽封住進(jin)出(chu)口,以防(fang)雜菌進(jin)入(ru)(ru)箱(xiang)內。箱(xiang)背面設(she)有液(ye)體菌種(zhong)移接(jie)管能進(jin)入(ru)(ru)的小(xiao)孔。
接(jie)(jie)種(zhong)箱(xiang)滅(mie)菌時,用(yong)紫(zi)外線照射(she)30min。如果沒有紫(zi)外線燈,可用(yong)甲醛(quan)和(he)高(gao)錳酸(suan)鉀(甲醛(quan)10~14mL/m3+高(gao)錳酸(suan)鉀5~7g/m3空間(jian))熏(xun)蒸30min以(yi)上。使用(yong)時,先將所需(xu)(xu)物品和(he)工具放(fang)入接(jie)(jie)種(zhong)箱(xiang)內,然后(hou)進行藥劑熏(xun)蒸和(he)紫(zi)外線滅(mie)菌,再按無菌操作進行接(jie)(jie)種(zhong)。接(jie)(jie)種(zhong)箱(xiang)的結構簡單,造價(jia)低廉,易消毒滅(mie)菌,操作方便,而且人(ren)在箱(xiang)外操作,氣溫較高(gao)時也(ye)能作業。缺點是進出培(pei)養基費工費時,每(mei)次(ci)接(jie)(jie)種(zhong)前都需(xu)(xu)要進行滅(mie)菌。
微波爐 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。

