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全自動凱(kai)氏(shi)定氮(dan)儀作(zuo)為測定蛋白質的儀器(qi),廣(guang)泛(fan)應(ying)用于乳(ru)與乳(ru)制品(pin)(pin)中(zhong)蛋白質的含量的測定。全自動凱(kai)氏(shi)定氮(dan)儀具有高靈敏度,分析速(su)度快,應(ying)用范圍廣(guang),所(suo)需試樣(yang)少,設備和(he)(he)操(cao)作(zuo)比較簡單等特點(dian)它是目前使用廣(guang)泛(fan)測定乳(ru)與乳(ru)制品(pin)(pin)中(zhong)蛋白質的儀器(qi)。嚴格按照說明(ming)書和(he)(he)儀器(qi)操(cao)作(zuo)規(gui)程(cheng)的要求(qiu),進行(xing)規(gui)范操(cao)作(zuo),這是正(zheng)確使用和(he)(he)...
定(ding)氮(dan)儀就是蛋(dan)白質含(han)(han)量(liang)測(ce)(ce)定(ding)儀。蛋(dan)白質多少直接反映(ying)這個(ge)物質(如牛奶(nai)等一(yi)些食(shi)品(pin)(pin))的(de)(de)品(pin)(pin)質高(gao)(gao)低,所(suo)以(yi)需要檢測(ce)(ce)才能在市場流通。定(ding)氮(dan)儀是用(yong)來測(ce)(ce)有(you)機物的(de)(de),一(yi)般是食(shi)品(pin)(pin)、飼料(liao)、化(hua)肥、土壤等物質里的(de)(de)N元(yuan)(yuan)素含(han)(han)量(liang),再計算(suan)轉換出其內的(de)(de)蛋(dan)白質含(han)(han)量(liang)(因(yin)為蛋(dan)白質中N元(yuan)(yuan)素的(de)(de)含(han)(han)量(liang)是有(you)一(yi)定(ding)比例的(de)(de),知道了(le)N元(yuan)(yuan)素含(han)(han)量(liang),也就能算(suan)出蛋(dan)白質含(han)(han)量(liang))。下面(mian)為您介紹可提高(gao)(gao)凱(kai)氏定(ding)氮(dan)儀使(shi)用(yong)效果(guo)的(de)(de)方法:1、樣(yang)(yang)品(pin)(pin)前(qian)處理(li)樣(yang)(yang)品(pin)(pin)應盡量(liang)選取具有(you)代表性(xing)的(de)(de),大塊(kuai)的(de)(de)固體樣(yang)(yang)品(pin)(pin)應用(yong)粉碎設備打得細小均勻(yun),液體樣(yang)(yang)要混合(he)均勻(yun)。2、模塊(kuai)化(hua)消(xiao)解裝(zhuang)置消(xiao)化(hua)樣(yang)(yang)品(pin)(pin)消(xiao)化(hua)過程(cheng)中...
定(ding)氮(dan)(dan)儀廣(guang)泛用于牛奶和(he)乳制品(pin)中(zhong)(zhong)(zhong)蛋(dan)白(bai)(bai)(bai)(bai)質(zhi)(zhi)的(de)(de)測定(ding)。定(ding)氮(dan)(dan)儀具有靈敏度高、分(fen)析(xi)速度快、適用范圍廣(guang)、所(suo)需樣品(pin)少、設備簡單、操作方便等(deng)特點。它是測定(ding)牛奶和(he)乳制品(pin)中(zhong)(zhong)(zhong)蛋(dan)白(bai)(bai)(bai)(bai)質(zhi)(zhi)廣(guang)泛使用的(de)(de)儀器。定(ding)氮(dan)(dan)儀檢(jian)測谷物、食品(pin)、飼料(liao)、水、土壤、淤泥、沉淀物和(he)化(hua)(hua)學品(pin)中(zhong)(zhong)(zhong)的(de)(de)氨、蛋(dan)白(bai)(bai)(bai)(bai)質(zhi)(zhi)氮(dan)(dan)含(han)量、酚、揮(hui)發性脂肪酸、化(hua)(hua)物、二氧化(hua)(hua)硫、乙(yi)醇(chun)等(deng)含(han)量。具有相當好的(de)(de)性價比,僅(jin)僅(jin)滴定(ding)過程需要(yao)人工操作一下,非常(chang)適合實驗室及檢(jian)驗機(ji)構常(chang)規檢(jian)測。廣(guang)泛用于食品(pin)、農(nong)作物、種子、土壤、肥料(liao)等(deng)樣品(pin)的(de)(de)含(han)氮(dan)(dan)量或(huo)蛋(dan)白(bai)(bai)(bai)(bai)質(zhi)(zhi)含(han)量分(fen)析(xi)。下面就(jiu)我(wo)在(zai)工作中(zhong)(zhong)(zhong)的(de)(de)體會,分(fen)別談一...
定氮儀(yi)開(kai)機(ji)蒸(zheng)(zheng)餾(liu)器(qi)(qi)內不加(jia)水(shui)(shui)怎樣處理?答(da):開(kai)機(ji)半分鐘中查(cha)看蒸(zheng)(zheng)餾(liu)水(shui)(shui)桶(tong)(tong)是否漏氣(qi)(qi),能(neng)(neng)被氣(qi)(qi)充鼓是正(zheng)(zheng)常(chang)(chang);查(cha)看蒸(zheng)(zheng)餾(liu)水(shui)(shui)桶(tong)(tong)內水(shui)(shui)位(wei)(wei)是否超過三分之一(yi),不行補齊;查(cha)看蒸(zheng)(zheng)餾(liu)水(shui)(shui)桶(tong)(tong)的(de)方位(wei)(wei),低于放置儀(yi)器(qi)(qi)的(de)臺面,壓力不行,加(jia)不上水(shui)(shui);查(cha)看蒸(zheng)(zheng)餾(liu)水(shui)(shui)桶(tong)(tong)進氣(qi)(qi)、進液管是否接(jie)錯,接(jie)錯桶(tong)(tong)內會發生氣(qi)(qi)泡并發出(chu)聲響;查(cha)看排水(shui)(shui)閥,應(ying)呈關閉狀態;定氮儀(yi)蒸(zheng)(zheng)鍋不加(jia)熱,不能(neng)(neng)發生蒸(zheng)(zheng)氣(qi)(qi),為什么?答(da):假(jia)(jia)如機(ji)器(qi)(qi)能(neng)(neng)正(zheng)(zheng)常(chang)(chang)加(jia)堿(jian),不能(neng)(neng)加(jia)熱出(chu)蒸(zheng)(zheng)氣(qi)(qi),判(pan)定加(jia)熱絲可能(neng)(neng)燒壞了,可拿萬用表量(liang)一(yi)下加(jia)熱絲正(zheng)(zheng)負極,不通可確認(ren)加(jia)熱絲損壞,換(huan)新加(jia)熱絲假(jia)(jia)如機(ji)器(qi)(qi)不能(neng)(neng)正(zheng)(zheng)常(chang)(chang)加(jia)堿(jian),開(kai)機(ji)后又...
而隨著(zhu)社會(hui)的(de)發(fa)展和科技的(de)進步,定(ding)氮儀(yi)已經(jing)(jing)發(fa)展到了全自動的(de)階段,實現(xian)了蒸(zheng)餾滴(di)(di)定(ding)一(yi)體,有(you)效(xiao)減少(shao)了人(ren)為因素的(de)誤差(cha)。定(ding)氮儀(yi)涉(she)及的(de)行業(ye)非常(chang)多(duo),有(you)食品(pin)、飲料(liao)、飼料(liao)、糧油、乳品(pin)、土(tu)壤、肥(fei)料(liao)、化肥(fei)、畜牧(mu)、污水處理、生物制藥等,而隨著(zhu)其使用(yong)量的(de)進一(yi)步擴大,有(you)些問題開始圖像,比(bi)如定(ding)氮儀(yi)在使用(yong)過程中(zhong),有(you)用(yong)戶發(fa)現(xian)定(ding)氮儀(yi)的(de)回收率總是(shi)偏(pian)低,而經(jing)(jing)過專(zhuan)業(ye)的(de)技術(shu)人(ren)員分析,我(wo)們發(fa)現(xian)造(zao)(zao)成這種情況的(de)主(zhu)要原因有(you)以下幾點:1.鹽(yan)(yan)酸標(biao)準(zhun)(zhun)溶液濃(nong)度太高,少(shao)一(yi)滴(di)(di)不(bu)到中(zhong)性。多(duo)一(yi)滴(di)(di)則過頭。2.鹽(yan)(yan)酸標(biao)準(zhun)(zhun)溶液放置時間過長,造(zao)(zao)成溶度不(bu)準(zhun)(zhun)...
定(ding)(ding)氮(dan)(dan)(dan)(dan)儀引進先進技(ji)術,為各行業用(yong)(yong)(yong)(yong)戶提(ti)(ti)供(gong)了大量(liang)的(de)產品和服務,世界眾多專業廠家有密切合(he)作(zuo)關系。同(tong)(tong)時,定(ding)(ding)氮(dan)(dan)(dan)(dan)儀差距充分利用(yong)(yong)(yong)(yong)互聯(lian)網(wang)絡的(de)優(you)勢,不僅能為用(yong)(yong)(yong)(yong)戶提(ti)(ti)供(gong)zui廣泛的(de)產品選擇(ze)機會,獲得*的(de)性格(ge)比,還可以(yi)為用(yong)(yong)(yong)(yong)戶快捷提(ti)(ti)供(gong)科技(ji)信(xin)息。同(tong)(tong)時,定(ding)(ding)氮(dan)(dan)(dan)(dan)儀價格(ge)適中、性能可靠、使(shi)用(yong)(yong)(yong)(yong)穩(wen)定(ding)(ding),符(fu)合(he)國家質(zhi)量(liang)標準的(de)儀器(qi)(qi)、儀表和設備。定(ding)(ding)氮(dan)(dan)(dan)(dan)儀是檢測種子、乳制品、飲(yin)料、飼料、土壤及(ji)其他農副產品中氮(dan)(dan)(dan)(dan)含(han)(han)量(liang)的(de)儀器(qi)(qi)。定(ding)(ding)氮(dan)(dan)(dan)(dan)儀是根(gen)據蛋白(bai)質(zhi)中氮(dan)(dan)(dan)(dan)的(de)含(han)(han)量(liang)恒定(ding)(ding)的(de)原理(li),通過測定(ding)(ding)樣品中氮(dan)(dan)(dan)(dan)的(de)含(han)(han)量(liang)從而計(ji)算(suan)蛋白(bai)質(zhi)含(han)(han)量(liang)的(de)儀器(qi)(qi)。因其蛋白(bai)質(zhi)含(han)(han)量(liang)測量(liang)計(ji)算(suan)的(de)方...
定(ding)氮(dan)(dan)(dan)(dan)儀(yi)的(de)(de)應(ying)用已經涉(she)及到多個行業,定(ding)氮(dan)(dan)(dan)(dan)儀(yi)是(shi)(shi)測(ce)定(ding)物質中的(de)(de)氮(dan)(dan)(dan)(dan)來換算粗蛋白(bai)質的(de)(de)經典方法。目(mu)前(qian),均普(pu)遍(bian)采用定(ding)氮(dan)(dan)(dan)(dan)儀(yi)定(ding)氮(dan)(dan)(dan)(dan)法來對土(tu)壤、食品、農產品、飼料以及一些物質進(jin)行氮(dan)(dan)(dan)(dan)—蛋白(bai)質含量的(de)(de)測(ce)定(ding)。而(er)如何選(xuan)擇定(ding)氮(dan)(dan)(dan)(dan)儀(yi)這個問題往(wang)往(wang)困(kun)擾著諸多的(de)(de)求(qiu)購者。那么下面(mian)上(shang)海祎(yi)鴻的(de)(de)小編為(wei)我(wo)們大家總結一下從哪個方面(mian)來選(xuan)擇一臺好的(de)(de)定(ding)氮(dan)(dan)(dan)(dan)儀(yi)。1.材質方面(mian)定(ding)氮(dan)(dan)(dan)(dan)儀(yi)是(shi)(shi)在較惡(e)劣(lie)環境下工作的(de)(de)儀(yi)器:濃硫酸,硼酸,氫氧化(hua)鈉等腐蝕(shi)體(ti)和加熱在儀(yi)器內產生負壓。這對儀(yi)器的(de)(de)外觀有(you)很大的(de)(de)考驗,為(wei)此定(ding)氮(dan)(dan)(dan)(dan)儀(yi)整機都采用了ABS工程(cheng)塑料,拋棄了傳統的(de)(de)金(jin)屬作為(wei)...