凈化工(gong)(gong)作(zuo)(zuo)臺是一種局部層流(liu)(liu)裝(zhuang)置,能在局部形(xing)成高潔度的(de)工(gong)(gong)作(zuo)(zuo)環境(jing)。它由(you)工(gong)(gong)作(zuo)(zuo)臺、過(guo)濾(lv)器(qi)、風機、靜壓箱(xiang)和(he)(he)支撐體等組成,采用(yong)過(guo)濾(lv)空氣(qi)(qi)使工(gong)(gong)作(zuo)(zuo)臺操(cao)作(zuo)(zuo)區(qu)(qu)達到凈化除(chu)菌的(de)目的(de)。室(shi)內空氣(qi)(qi)經預(yu)過(guo)濾(lv)器(qi)和(he)(he)高效過(guo)濾(lv)除(chu)塵后以垂直或水平層流(liu)(liu)狀(zhuang)態通過(guo)工(gong)(gong)作(zuo)(zuo)臺的(de)操(cao)作(zuo)(zuo)區(qu)(qu),由(you)于空氣(qi)(qi)沒有渦流(liu)(liu),所以,任何一點灰(hui)塵或附(fu)著在灰(hui)塵上的(de)雜菌都能被排除(chu),不易向別處擴散和(he)(he)轉移。因此,可使操(cao)作(zuo)(zuo)區(qu)(qu)保持無菌狀(zhuang)態。
與沒有細菌檢測室和注射箱比,選用活性炭吸附任務臺包括任務條件好、操作步驟省事、沒有細菌檢測治療郊果耐用、無消毒殺菌藥水對人們不良影響、動用總面積小且可中國移動等的特點。假設放至沒有細菌檢測別墅地下室選用,沒有細菌檢測治療郊果好。其弱項是市場價高昂,預吸附器和便捷吸附器還要求定時擦拭和進行更換。 高壓電蒸汽發生器過濾除菌鍋高(gao)壓(ya)(ya)蒸(zheng)汽(qi)(qi)滅菌(jun)鍋是一(yi)個密閉的(de)(de)、可(ke)(ke)以耐受一(yi)定(ding)壓(ya)(ya)力的(de)(de)雙層金屬(shu)鍋。鍋底(di)或夾層內(nei)(nei)盛水(shui),當水(shui)在鍋內(nei)(nei)沸(fei)(fei)騰時(shi)由于蒸(zheng)汽(qi)(qi)不能逸出,使鍋內(nei)(nei)壓(ya)(ya)力逐漸升(sheng)高(gao),水(shui)的(de)(de)沸(fei)(fei)點和溫度可(ke)(ke)隨之(zhi)升(sheng)高(gao),從(cong)而達到高(gao)溫滅菌(jun)的(de)(de)目(mu)的(de)(de)。一(yi)般在0.11MPa的(de)(de)壓(ya)(ya)力下,121℃滅菌(jun)20~30min,包括(kuo)芽(ya)孢在內(nei)(nei)的(de)(de)所(suo)有(you)微生物(wu)均(jun)可(ke)(ke)被殺死。如果(guo)滅菌(jun)物(wu)品體積較大,蒸(zheng)汽(qi)(qi)穿(chuan)透困難(nan),可(ke)(ke)以適當提高(gao)蒸(zheng)汽(qi)(qi)壓(ya)(ya)力或延長滅菌(jun)時(shi)間。
進行各類超高壓超高壓蒸汽無菌方法鍋有柜式、柜式、手提箱箱式等多種不同型,在微生態學學實踐室,極為實用的是手提箱箱式和柜式進行各類超高壓空氣壓縮超高壓蒸汽無菌方法鍋。和自然壓超高壓蒸汽無菌方法鍋相較于,進行各類超高壓超高壓蒸汽無菌方法鍋的顯著優點是超高壓蒸汽無菌方法的需求的時光短、省燃劑、超高壓蒸汽無菌方法徹徹底底等。其短處是的價格高昂,超高壓蒸汽無菌方法存儲容量較小。 養成箱培(pei)(pei)(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)箱(xiang)(xiang)是(shi)培(pei)(pei)(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)微生(sheng)(sheng)物(wu)的(de)專用設備(bei)。制熱式培(pei)(pei)(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)箱(xiang)(xiang)是(shi)由電(dian)爐絲(si)和(he)溫(wen)度(du)(du)(du)控制儀合(he)成的(de)固(gu)定體積的(de)恒(heng)溫(wen)培(pei)(pei)(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)裝置,大小(xiao)規格不一(yi)。微生(sheng)(sheng)物(wu)實驗室常用的(de)培(pei)(pei)(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)箱(xiang)(xiang)工(gong)作容積有(you)450×450×350mm3或650×500×500mm3,適(shi)用于室溫(wen)至60℃之(zhi)間的(de)各(ge)類微生(sheng)(sheng)物(wu)培(pei)(pei)(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)。目前,隨(sui)著科學水平的(de)發展,培(pei)(pei)(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)箱(xiang)(xiang)設備(bei)的(de)完善程度(du)(du)(du)和(he)價格有(you)很大差別。有(you)各(ge)種結構合(he)理、功能齊全的(de)培(pei)(pei)(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)箱(xiang)(xiang),如恒(heng)溫(wen)培(pei)(pei)(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)箱(xiang)(xiang)、恒(heng)溫(wen)恒(heng)濕培(pei)(pei)(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)箱(xiang)(xiang)、低溫(wen)培(pei)(pei)(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)箱(xiang)(xiang)、微生(sheng)(sheng)物(wu)多用培(pei)(pei)(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)箱(xiang)(xiang)和(he)二氧化碳培(pei)(pei)(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)箱(xiang)(xiang)等(deng)。有(you)的(de)用計算機控制,可(ke)選(xuan)擇(ze)多條時(shi)間線(xian)變換溫(wen)差,從而克服了環境溫(wen)度(du)(du)(du)的(de)影響(xiang),一(yi)年四季均能達到培(pei)(pei)(pei)(pei)(pei)養(yang)(yang)(yang)(yang)(yang)要求(qiu)的(de)溫(wen)度(du)(du)(du)。
微(wei)生(sheng)物多用培養箱是集加熱、制冷和振蕩于一(yi)體的微(wei)生(sheng)物液體發酵(jiao)裝置(zhi)。工作室(shi)的溫度在15~50℃范(fan)圍(wei)內任意選(xuan)定,選(xuan)定后(hou)經溫控(kong)(kong)儀(yi)自動控(kong)(kong)制,保(bao)持工作室(shi)內恒溫。同時設有(you)可控(kong)(kong)硅調(diao)速系統,振蕩機轉速可在1~220rpm范(fan)圍(wei)內任意調(diao)控(kong)(kong)。
晾干箱干(gan)燥箱(xiang)(xiang)是用(yong)于除(chu)去潮濕物料(liao)內(nei)及器皿內(nei)外水(shui)分或其它揮發性(xing)溶液的設備。類型很(hen)多,有(you)(you)(you)箱(xiang)(xiang)式(shi)(shi)、滾筒(tong)式(shi)(shi)、套間式(shi)(shi)、回(hui)轉式(shi)(shi)等。微生物學實驗室多用(yong)箱(xiang)(xiang)式(shi)(shi)干(gan)燥箱(xiang)(xiang),大小規格不(bu)一。工作室內(nei)配(pei)有(you)(you)(you)可活(huo)動的鐵絲(si)網(wang)板,便于放置(zhi)被(bei)干(gan)燥的物品。制熱(re)升溫(wen)(wen)式(shi)(shi)干(gan)燥箱(xiang)(xiang)也是有(you)(you)(you)電爐絲(si)和溫(wen)(wen)度(du)控制儀(yi)組成,可調節溫(wen)(wen)度(du)從室溫(wen)(wen)至300℃任意(yi)選擇。有(you)(you)(you)的干(gan)燥箱(xiang)(xiang)采用(yong)導(dao)電溫(wen)(wen)度(du)計為敏感元件,配(pei)合晶體管(guan)和繼(ji)電器組成自動控制系統,克(ke)服了(le)金屬管(guan)型熱(re)膨(peng)脹控制的缺點。此(ci)外,還(huan)有(you)(you)(you)真空干(gan)燥箱(xiang)(xiang)(配(pei)有(you)(you)(you)真空泵(beng)和氣(qi)壓(ya)表),可在常壓(ya)或減壓(ya)下(xia)操(cao)作。
搖床
搖(yao)(yao)床(chuang)又稱(cheng)搖(yao)(yao)瓶機(ji),它是培養好氣(qi)性微生(sheng)物(wu)的(de)小(xiao)型試(shi)驗設備或作為(wei)種(zhong)子擴大培養之用(yong),常用(yong)的(de)搖(yao)(yao)床(chuang)有(you)往復式(shi)和旋轉(zhuan)式(shi)兩種(zhong)。往復式(shi)搖(yao)(yao)床(chuang)的(de)往復頻率一般(ban)(ban)在(zai)80~140次/min,沖(chong)程(cheng)一般(ban)(ban)為(wei)5~14cm,如頻率過(guo)(guo)快、沖(chong)程(cheng)過(guo)(guo)大或瓶內液(ye)(ye)體(ti)裝量過(guo)(guo)多,在(zai)搖(yao)(yao)動時液(ye)(ye)體(ti)會濺到包扎瓶口的(de)紗布或棉塞上,導(dao)致雜菌污染,特別是啟(qi)動時更容易發生(sheng)這種(zhong)情(qing)況。旋轉(zhuan)式(shi)搖(yao)(yao)床(chuang)的(de)偏心距一般(ban)(ban)在(zai)3~6cm之間,旋轉(zhuan)次數(shu)為(wei)60~300rpm。
放(fang)在搖(yao)床上的(de)(de)培養瓶(ping)(一般(ban)為三角瓶(ping))中的(de)(de)發酵液(ye)所(suo)需要的(de)(de)氧(yang)是由空氣經(jing)瓶(ping)口(kou)包扎的(de)(de)紗布(一般(ban)8層)或(huo)棉塞通入的(de)(de),所(suo)以氧(yang)的(de)(de)傳遞與瓶(ping)口(kou)的(de)(de)大小、瓶(ping)口(kou)的(de)(de)幾何(he)形狀(zhuang)、棉塞或(huo)紗布的(de)(de)厚度(du)和密度(du)有關。在通常情況下,搖(yao)瓶(ping)的(de)(de)氧(yang)吸收系數取決于搖(yao)床的(de)(de)特性和三角瓶(ping)的(de)(de)裝樣量。
回轉式式式搖床是憑借曲柄方式助推搖床作回轉式式運功,產品設備為金屬制或竹木的長方框子,一斜層至多層塑料鐵托盤,塑料鐵托盤上都有圓形備放培訓瓶,孔中外凸一半圓形鉛筆,加以固定不動培訓瓶并以減少瓶的振蕩,傳輸組織機構應該采用了特殊腰帶款的輪緩速,互換調低腰帶款的輪可發生變化回轉式式速率。扁心輪上都有有差異 的扁心孔,以便于調低扁心距。回轉式式式搖床的速率和扁心距的寬度對氧的吸收的作用有明星的影向。 電動機式搖床是用電動機的偏軸距軸使塑料托盤價格價格扭動,塑料托盤價格價格有個層或一二層,適用不銹不繡鋼、鋁塑板或竹木板加工。在三種偏軸距軸上用有螺絲可手動調節節兩邊,使塑料托盤價格價格始終維持平行。這些搖床設計很復雜,造價比高。其優越性是氧的傳送較佳、瓦數消費小、鍛煉基不容易濺到瓶口的沙布上。 顯微鏡觀察 微菌物員工肺部結節影,需靈活運用高倍光學顯微鏡才能夠洞察分析明確我們的員工體型和體細胞型式。所以說,在微菌物學的幾項的研究中,高倍光學顯微鏡就成為不可以中缺的生產工具。顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)的(de)(de)種類很多,根據其(qi)結構,可以(yi)(yi)分為(wei)光學(xue)顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)和(he)非(fei)光學(xue)顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)兩大(da)(da)類。光學(xue)顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)又可分為(wei)單式(shi)顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)和(he)復式(shi)顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)。最(zui)(zui)簡(jian)單的(de)(de)單式(shi)顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)即(ji)放(fang)大(da)(da)鏡(jing)(jing)(放(fang)大(da)(da)倍數常在10倍左(zuo)右(you)),構造復雜的(de)(de)單式(shi)顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)為(wei)解剖顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(放(fang)大(da)(da)倍數在200左(zuo)右(you))。在微(wei)(wei)(wei)(wei)生物學(xue)的(de)(de)研究(jiu)中(zhong),主要是復式(shi)顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)。其(qi)中(zhong)以(yi)(yi)普(pu)通(tong)光學(xue)顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)(明視野顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing))最(zui)(zui)為(wei)常用。此(ci)外(wai),還有暗(an)視野顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)、相(xiang)差顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)、熒(ying)光顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)、偏光顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)、紫(zi)外(wai)光顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)和(he)倒置(zhi)顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)等。非(fei)光學(xue)顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)為(wei)電子顯(xian)(xian)(xian)微(wei)(wei)(wei)(wei)鏡(jing)(jing)。
疫苗接種箱接(jie)種(zhong)(zhong)(zhong)(zhong)(zhong)箱分為固體(ti)菌種(zhong)(zhong)(zhong)(zhong)(zhong)接(jie)種(zhong)(zhong)(zhong)(zhong)(zhong)箱和(he)(he)(he)液(ye)體(ti)菌種(zhong)(zhong)(zhong)(zhong)(zhong)接(jie)種(zhong)(zhong)(zhong)(zhong)(zhong)箱兩(liang)(liang)種(zhong)(zhong)(zhong)(zhong)(zhong)。固體(ti)菌種(zhong)(zhong)(zhong)(zhong)(zhong)接(jie)種(zhong)(zhong)(zhong)(zhong)(zhong)箱是一個用木料和(he)(he)(he)玻(bo)璃(li)制成(cheng)或(huo)(huo)(huo)由(you)有(you)(you)(you)機玻(bo)璃(li)焊(han)接(jie)而(er)(er)成(cheng)的(de)(de)密閉小(xiao)箱。又分為雙(shuang)(shuang)人和(he)(he)(he)單人操作箱。箱體(ti)可(ke)大可(ke)小(xiao),一般箱體(ti)長約143cm,寬86cm,總高154cm,支架76cm。箱的(de)(de)上部(bu)(bu)左右兩(liang)(liang)側(ce)各裝(zhuang)(zhuang)有(you)(you)(you)兩(liang)(liang)扇(shan)能啟閉的(de)(de)玻(bo)璃(li)推拉門,方便菌種(zhong)(zhong)(zhong)(zhong)(zhong)進出(chu)。窗的(de)(de)下(xia)部(bu)(bu)分別設有(you)(you)(you)兩(liang)(liang)個直徑約13cm的(de)(de)圓(yuan)洞(dong),兩(liang)(liang)洞(dong)的(de)(de)中心(xin)距(ju)離為52cm(同肩寬),洞(dong)口裝(zhuang)(zhuang)有(you)(you)(you)帶松緊帶的(de)(de)袖(xiu)套,以防雙(shuang)(shuang)手(shou)在箱內(nei)操作時(shi),外(wai)界空氣進入箱內(nei)造成(cheng)污染。操作時(shi)兩(liang)(liang)人相對而(er)(er)坐,雙(shuang)(shuang)手(shou)通過袖(xiu)套伸(shen)入箱內(nei)。箱兩(liang)(liang)側(ce)最好也裝(zhuang)(zhuang)上玻(bo)璃(li),箱頂部(bu)(bu)為木板或(huo)(huo)(huo)玻(bo)璃(li)。箱內(nei)頂部(bu)(bu)裝(zhuang)(zhuang)有(you)(you)(you)紫(zi)外(wai)線殺菌燈和(he)(he)(he)照明用日光燈各一支。箱體(ti)安裝(zhuang)(zhuang)木板或(huo)(huo)(huo)玻(bo)璃(li)均可(ke),但要注意密封。
液體(ti)菌(jun)種(zhong)(zhong)(zhong)接種(zhong)(zhong)(zhong)箱是專為(wei)移接液體(ti)菌(jun)種(zhong)(zhong)(zhong)而設(she)計的。比(bi)固體(ti)菌(jun)種(zhong)(zhong)(zhong)箱窄長(chang),單側兩(liang)人操作。內設(she)軌道和(he)紫外線燈(deng),箱兩(liang)端(duan)開有高25cm,寬10cm的長(chang)方形出(chu)口,方便菌(jun)種(zhong)(zhong)(zhong)進出(chu),洞口設(she)有小推門。進出(chu)口下處設(she)蒸(zheng)汽(qi)源(yuan),接種(zhong)(zhong)(zhong)時用蒸(zheng)汽(qi)封住進出(chu)口,以(yi)防雜菌(jun)進入箱內。箱背面設(she)有液體(ti)菌(jun)種(zhong)(zhong)(zhong)移接管能進入的小孔。
接(jie)種(zhong)箱(xiang)滅(mie)(mie)菌時,用(yong)紫外(wai)線照射30min。如果沒有紫外(wai)線燈,可用(yong)甲醛和(he)高錳酸鉀(甲醛10~14mL/m3+高錳酸鉀5~7g/m3空(kong)間(jian))熏蒸30min以(yi)上。使用(yong)時,先將所(suo)需物(wu)品和(he)工具放入接(jie)種(zhong)箱(xiang)內(nei),然(ran)后(hou)進(jin)行(xing)藥(yao)劑熏蒸和(he)紫外(wai)線滅(mie)(mie)菌,再按無菌操(cao)作進(jin)行(xing)接(jie)種(zhong)。接(jie)種(zhong)箱(xiang)的結構簡單,造價低廉(lian),易消(xiao)毒滅(mie)(mie)菌,操(cao)作方便,而且人在箱(xiang)外(wai)操(cao)作,氣溫較高時也能作業。缺點是進(jin)出培養基費工費時,每次接(jie)種(zhong)前都需要進(jin)行(xing)滅(mie)(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。