凈化(hua)(hua)工作(zuo)(zuo)臺是一種局部(bu)層流裝置,能在(zai)局部(bu)形(xing)成(cheng)高潔(jie)度的(de)工作(zuo)(zuo)環境。它由工作(zuo)(zuo)臺、過濾器(qi)、風(feng)機、靜壓箱和(he)(he)支(zhi)撐體等組成(cheng),采用(yong)過濾空(kong)氣(qi)(qi)使工作(zuo)(zuo)臺操(cao)作(zuo)(zuo)區(qu)達到(dao)凈化(hua)(hua)除(chu)菌的(de)目的(de)。室內空(kong)氣(qi)(qi)經預過濾器(qi)和(he)(he)高效過濾除(chu)塵后以垂(chui)直或水平層流狀態(tai)(tai)通過工作(zuo)(zuo)臺的(de)操(cao)作(zuo)(zuo)區(qu),由于(yu)空(kong)氣(qi)(qi)沒有渦流,所以,任何一點灰塵或附著在(zai)灰塵上的(de)雜菌都能被排(pai)除(chu),不易向別處擴散和(he)(he)轉移。因此(ci),可使操(cao)作(zuo)(zuo)區(qu)保(bao)持無菌狀態(tai)(tai)。
與滅菌室和打疫苗箱特別,實用自凈事情臺存在事情能力好、運作更方便、滅菌感覺可信度、無殺菌消毒化學劑對身體傷害、損壞總面積小且可挪動等長處。如在滅菌棚內實用,滅菌感覺更多。其缺陷:是定價高端,預篩選程序器和快速篩選程序器還可以期限清潔工作和換新。 高壓力水汽高壓蒸汽滅菌鍋高(gao)壓蒸(zheng)汽滅菌(jun)鍋(guo)是(shi)一(yi)個密閉的(de)、可(ke)以耐受一(yi)定壓力(li)的(de)雙層金(jin)屬(shu)鍋(guo)。鍋(guo)底或夾層內(nei)盛水,當(dang)水在(zai)鍋(guo)內(nei)沸騰(teng)時(shi)由于蒸(zheng)汽不能逸出,使鍋(guo)內(nei)壓力(li)逐(zhu)漸(jian)升高(gao),水的(de)沸點(dian)和溫度(du)可(ke)隨之(zhi)升高(gao),從而達到高(gao)溫滅菌(jun)的(de)目的(de)。一(yi)般在(zai)0.11MPa的(de)壓力(li)下,121℃滅菌(jun)20~30min,包括芽(ya)孢在(zai)內(nei)的(de)所有微(wei)生物均可(ke)被殺死。如(ru)果滅菌(jun)物品體積較大,蒸(zheng)汽穿透困難,可(ke)以適當(dang)提高(gao)蒸(zheng)汽壓力(li)或延長滅菌(jun)時(shi)間。
髙壓消毒鍋有開式、開式、手堤式等不同業務類型,在微生物發酵制品學實驗操作室,是較常用的是手堤式和開式髙壓蒸汽加熱消毒鍋。和臥式儲罐消毒鍋不同于,髙壓消毒鍋的獨到之處是消毒需求的周期短、節儉液體燃料、消毒全面等。其優點是收費昂貴,消毒儲存量較小。 的培養箱培(pei)養(yang)(yang)(yang)箱(xiang)是培(pei)養(yang)(yang)(yang)微(wei)生(sheng)(sheng)物的(de)(de)(de)專(zhuan)用設(she)備。制熱式培(pei)養(yang)(yang)(yang)箱(xiang)是由電爐絲和(he)溫(wen)度(du)(du)控(kong)制儀合成的(de)(de)(de)固定體積的(de)(de)(de)恒(heng)溫(wen)培(pei)養(yang)(yang)(yang)裝置,大小規格(ge)不一。微(wei)生(sheng)(sheng)物實驗室(shi)常用的(de)(de)(de)培(pei)養(yang)(yang)(yang)箱(xiang)工作(zuo)容積有(you)450×450×350mm3或650×500×500mm3,適用于室(shi)溫(wen)至60℃之間(jian)的(de)(de)(de)各(ge)類微(wei)生(sheng)(sheng)物培(pei)養(yang)(yang)(yang)。目(mu)前,隨著科學水平(ping)的(de)(de)(de)發(fa)展(zhan),培(pei)養(yang)(yang)(yang)箱(xiang)設(she)備的(de)(de)(de)完善程度(du)(du)和(he)價格(ge)有(you)很大差別。有(you)各(ge)種結構合理、功(gong)能(neng)齊全的(de)(de)(de)培(pei)養(yang)(yang)(yang)箱(xiang),如恒(heng)溫(wen)培(pei)養(yang)(yang)(yang)箱(xiang)、恒(heng)溫(wen)恒(heng)濕培(pei)養(yang)(yang)(yang)箱(xiang)、低溫(wen)培(pei)養(yang)(yang)(yang)箱(xiang)、微(wei)生(sheng)(sheng)物多(duo)用培(pei)養(yang)(yang)(yang)箱(xiang)和(he)二氧化(hua)碳(tan)培(pei)養(yang)(yang)(yang)箱(xiang)等(deng)。有(you)的(de)(de)(de)用計算機控(kong)制,可選(xuan)擇多(duo)條(tiao)時間(jian)線變換溫(wen)差,從而克服了(le)環境溫(wen)度(du)(du)的(de)(de)(de)影響,一年四季均(jun)能(neng)達到培(pei)養(yang)(yang)(yang)要(yao)求的(de)(de)(de)溫(wen)度(du)(du)。
微(wei)生(sheng)物(wu)多用(yong)培養箱是集加熱、制(zhi)冷(leng)和振蕩(dang)于一(yi)體的微(wei)生(sheng)物(wu)液體發酵裝置。工(gong)作室(shi)的溫度在15~50℃范圍內(nei)(nei)任意(yi)選定(ding),選定(ding)后(hou)經溫控儀自動(dong)控制(zhi),保持工(gong)作室(shi)內(nei)(nei)恒溫。同時設有(you)可(ke)控硅調(diao)速(su)系統,振蕩(dang)機轉速(su)可(ke)在1~220rpm范圍內(nei)(nei)任意(yi)調(diao)控。
干澀箱干(gan)燥(zao)(zao)箱(xiang)是用(yong)于(yu)(yu)除去潮濕(shi)物(wu)料內(nei)及器(qi)皿內(nei)外(wai)水分或其(qi)它揮發性溶液的設備。類型很多,有箱(xiang)式(shi)(shi)、滾筒(tong)式(shi)(shi)、套間式(shi)(shi)、回轉(zhuan)式(shi)(shi)等。微生物(wu)學實驗室多用(yong)箱(xiang)式(shi)(shi)干(gan)燥(zao)(zao)箱(xiang),大小(xiao)規格不一。工作室內(nei)配(pei)(pei)有可(ke)活動(dong)的鐵絲(si)網板,便于(yu)(yu)放置(zhi)被干(gan)燥(zao)(zao)的物(wu)品。制(zhi)(zhi)熱升溫式(shi)(shi)干(gan)燥(zao)(zao)箱(xiang)也是有電爐(lu)絲(si)和(he)溫度(du)控(kong)(kong)制(zhi)(zhi)儀組(zu)成(cheng),可(ke)調(diao)節溫度(du)從(cong)室溫至300℃任意選擇。有的干(gan)燥(zao)(zao)箱(xiang)采用(yong)導電溫度(du)計為敏感(gan)元件,配(pei)(pei)合晶體管和(he)繼電器(qi)組(zu)成(cheng)自動(dong)控(kong)(kong)制(zhi)(zhi)系統,克服了金屬管型熱膨(peng)脹(zhang)控(kong)(kong)制(zhi)(zhi)的缺(que)點。此外(wai),還有真(zhen)空干(gan)燥(zao)(zao)箱(xiang)(配(pei)(pei)有真(zhen)空泵和(he)氣壓表),可(ke)在常壓或減壓下操作。
搖床
搖(yao)床又稱搖(yao)瓶(ping)機,它(ta)是(shi)(shi)培養(yang)(yang)好氣性微生物的(de)小(xiao)型試驗設備或(huo)作為種子擴大培養(yang)(yang)之用(yong)(yong),常用(yong)(yong)的(de)搖(yao)床有往(wang)(wang)復(fu)式(shi)和旋(xuan)轉(zhuan)式(shi)兩種。往(wang)(wang)復(fu)式(shi)搖(yao)床的(de)往(wang)(wang)復(fu)頻率一般在(zai)80~140次(ci)/min,沖(chong)程(cheng)一般為5~14cm,如(ru)頻率過快、沖(chong)程(cheng)過大或(huo)瓶(ping)內液體(ti)裝量過多(duo),在(zai)搖(yao)動(dong)時液體(ti)會(hui)濺(jian)到包(bao)扎(zha)瓶(ping)口的(de)紗布或(huo)棉塞(sai)上,導致雜(za)菌污染,特別是(shi)(shi)啟動(dong)時更容易發生這種情況。旋(xuan)轉(zhuan)式(shi)搖(yao)床的(de)偏心距一般在(zai)3~6cm之間,旋(xuan)轉(zhuan)次(ci)數(shu)為60~300rpm。
放在(zai)搖床(chuang)上的(de)(de)(de)培養瓶(ping)(ping)(一般(ban)為三角瓶(ping)(ping))中的(de)(de)(de)發酵液所需要的(de)(de)(de)氧是由空氣經瓶(ping)(ping)口包扎的(de)(de)(de)紗布(一般(ban)8層)或(huo)棉塞(sai)通入的(de)(de)(de),所以氧的(de)(de)(de)傳遞與(yu)瓶(ping)(ping)口的(de)(de)(de)大小、瓶(ping)(ping)口的(de)(de)(de)幾何(he)形狀(zhuang)、棉塞(sai)或(huo)紗布的(de)(de)(de)厚(hou)度和密度有關。在(zai)通常情況下,搖瓶(ping)(ping)的(de)(de)(de)氧吸收系(xi)數取(qu)決于搖床(chuang)的(de)(de)(de)特性和三角瓶(ping)(ping)的(de)(de)(de)裝樣量。
回轉式式搖床是合理利用曲柄道理推動搖床作回轉式運轉,屏幕為金屬制或廚衛電器的長方框子,一 層至二層棧板,棧板上面圓形孔備放培養出計劃瓶,孔中突起同一個三角型形橡膠,能夠調整培養出計劃瓶并變少瓶的高頻振動,傳動裝置部門一般來說主要包括特殊腰帶輪減慢速度,需要更改調壓腰帶輪可變更回轉式頻次。彎矩輪上打有不相同的彎矩孔,能夠調理彎矩距。回轉式式搖床的頻次和彎矩距的數值對氧的消化有嚴重的反應。 自動旋轉視頻式搖床是靈活運用自動旋轉視頻的偏軸軸使棧板偏移,棧板全是層或三層,該用不銹冷庫保溫隔熱板的表層板、鋁單板或實木板生產制造。在二個偏軸軸能裝有螺釘能調節左右兩,使棧板提高能力。一些搖床構造繁多,造貴點。其缺點有哪些是氧的傳輸好點、功效損耗小、訓練基是不會濺到瓶口的紗布繃帶上。 高倍顯微鏡 菌群工程自然人小,肯定有效利用顯微鏡觀察觀察分析才能夠觀察分析清晰這些的自然人性狀和上皮細胞設備構造。但是,在菌群工程學的相關研究探討中,顯微鏡觀察觀察分析就成了不能缺失的設備。顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)的種(zhong)類很多,根據(ju)其結(jie)構,可以分為(wei)(wei)光(guang)(guang)(guang)學顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)和(he)非光(guang)(guang)(guang)學顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)兩大(da)(da)類。光(guang)(guang)(guang)學顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)又可分為(wei)(wei)單(dan)式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)和(he)復(fu)式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)。最簡單(dan)的單(dan)式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)即放(fang)大(da)(da)鏡(jing)(jing)(jing)(jing)(jing)(放(fang)大(da)(da)倍(bei)數常在10倍(bei)左右(you)(you)),構造(zao)復(fu)雜的單(dan)式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)為(wei)(wei)解(jie)剖(pou)顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(放(fang)大(da)(da)倍(bei)數在200左右(you)(you))。在微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)生(sheng)物學的研(yan)究中,主要是復(fu)式(shi)顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)。其中以普(pu)通光(guang)(guang)(guang)學顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)(明視野顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing))最為(wei)(wei)常用。此外,還有暗視野顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)、相差顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)、熒光(guang)(guang)(guang)顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)、偏光(guang)(guang)(guang)顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)、紫外光(guang)(guang)(guang)顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)和(he)倒置顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)等。非光(guang)(guang)(guang)學顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)為(wei)(wei)電子顯(xian)(xian)(xian)(xian)(xian)(xian)微(wei)(wei)(wei)(wei)(wei)(wei)(wei)(wei)鏡(jing)(jing)(jing)(jing)(jing)。
打疫苗箱接(jie)種(zhong)箱分為固(gu)體(ti)(ti)(ti)菌(jun)種(zhong)接(jie)種(zhong)箱和(he)液體(ti)(ti)(ti)菌(jun)種(zhong)接(jie)種(zhong)箱兩種(zhong)。固(gu)體(ti)(ti)(ti)菌(jun)種(zhong)接(jie)種(zhong)箱是一(yi)(yi)個(ge)用木(mu)料和(he)玻(bo)璃制成(cheng)或由(you)有(you)機玻(bo)璃焊接(jie)而成(cheng)的(de)(de)密(mi)閉小箱。又分為雙人和(he)單人操(cao)作箱。箱體(ti)(ti)(ti)可大可小,一(yi)(yi)般箱體(ti)(ti)(ti)長約143cm,寬(kuan)86cm,總高154cm,支架76cm。箱的(de)(de)上部(bu)左(zuo)右兩側各(ge)裝有(you)兩扇能(neng)啟閉的(de)(de)玻(bo)璃推拉(la)門,方便菌(jun)種(zhong)進出(chu)。窗的(de)(de)下(xia)部(bu)分別(bie)設(she)有(you)兩個(ge)直徑(jing)約13cm的(de)(de)圓洞(dong)(dong),兩洞(dong)(dong)的(de)(de)中心(xin)距離為52cm(同(tong)肩寬(kuan)),洞(dong)(dong)口(kou)裝有(you)帶(dai)松(song)緊帶(dai)的(de)(de)袖(xiu)套,以防雙手在箱內(nei)操(cao)作時,外界空氣進入箱內(nei)造成(cheng)污染。操(cao)作時兩人相(xiang)對而坐,雙手通過袖(xiu)套伸(shen)入箱內(nei)。箱兩側最(zui)好也裝上玻(bo)璃,箱頂部(bu)為木(mu)板或玻(bo)璃。箱內(nei)頂部(bu)裝有(you)紫外線殺菌(jun)燈(deng)和(he)照(zhao)明用日光燈(deng)各(ge)一(yi)(yi)支。箱體(ti)(ti)(ti)安裝木(mu)板或玻(bo)璃均可,但要注意密(mi)封。
液(ye)(ye)體(ti)菌(jun)種接(jie)種箱(xiang)是專為移(yi)接(jie)液(ye)(ye)體(ti)菌(jun)種而設(she)(she)計的(de)。比固體(ti)菌(jun)種箱(xiang)窄長,單側兩人操作。內(nei)設(she)(she)軌道和紫外(wai)線燈(deng),箱(xiang)兩端(duan)開有(you)高25cm,寬10cm的(de)長方形出(chu)口(kou),方便(bian)菌(jun)種進(jin)出(chu),洞口(kou)設(she)(she)有(you)小(xiao)推門。進(jin)出(chu)口(kou)下處設(she)(she)蒸(zheng)汽源,接(jie)種時用蒸(zheng)汽封(feng)住進(jin)出(chu)口(kou),以防雜菌(jun)進(jin)入箱(xiang)內(nei)。箱(xiang)背面設(she)(she)有(you)液(ye)(ye)體(ti)菌(jun)種移(yi)接(jie)管(guan)能進(jin)入的(de)小(xiao)孔。
接種(zhong)箱滅(mie)菌(jun)(jun)(jun)時(shi),用紫外(wai)(wai)線照射30min。如果沒有(you)紫外(wai)(wai)線燈,可(ke)用甲醛和(he)高(gao)錳酸(suan)鉀(jia)(jia)(甲醛10~14mL/m3+高(gao)錳酸(suan)鉀(jia)(jia)5~7g/m3空間)熏蒸(zheng)30min以上。使(shi)用時(shi),先將所需物(wu)品和(he)工具放入(ru)接種(zhong)箱內,然后(hou)進(jin)(jin)行(xing)藥(yao)劑熏蒸(zheng)和(he)紫外(wai)(wai)線滅(mie)菌(jun)(jun)(jun),再按無(wu)菌(jun)(jun)(jun)操(cao)作進(jin)(jin)行(xing)接種(zhong)。接種(zhong)箱的結構(gou)簡單,造價低廉,易消(xiao)毒滅(mie)菌(jun)(jun)(jun),操(cao)作方便,而且人在箱外(wai)(wai)操(cao)作,氣溫(wen)較高(gao)時(shi)也能作業。缺點是(shi)進(jin)(jin)出培養基費工費時(shi),每(mei)次接種(zhong)前都需要進(jin)(jin)行(xing)滅(mie)菌(jun)(jun)(jun)。
冰箱保鮮 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。

