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class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應</a>?<a href="http://www.cdcfah.com/cp/first-_yiqiyibiao/">儀器儀表</a>?<a href="http://www.cdcfah.com/cp/second-yiqiyibiao_gxyq/">光學儀器</a>?<a href="http://www.cdcfah.com/cp/third-gxyq_gpygdj/">光譜儀、光度計</a>?三用紫外可見分光光度計現(xiàn)貨服務為先上海儀電分析儀器供應</p><div id="ibnuw8y" class="leftbox clearfix"><h1>三用紫外可見分光光度計現(xiàn)貨服務為先上海儀電分析儀器供應</h1><div id="q33ba3w" class="proBig"><div id="mk7uwd3" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592124342670/5540999.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3hovxeq" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592124342670/5540999.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="hqxz3kt" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>三用紫外可見分光光度計現(xiàn)貨,紫外可見分光光度計</p><p><span>***更新：</span>2020-11-14 00:29:32</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="kzw8ibs" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海儀電分析儀器有限公司</a></p><p><span>聯(lián)系人：</span>薛馬駿</p><p><span>郵箱: </span>ydfxwx@qq.com</p><p><span>電話: </span>18001994173</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.inesa-a.com</p><p><span>手機: </span>021-34530361</p><p><span>地址: </span>徐塘路88號7幢4層、9幢</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="fzls2py" class="page-proshow02"><p class="title">詳細說明</p><div id="n3zelxe" class="box"><p><p> 可見分光光度計，紫外分光光度計和紫外可見分光光度計有什么區(qū)別? </p> <p> 可見分光光度計和紫外分光光度計的區(qū)別是測定波長范圍不同，一般可見光波長范圍是400～1000nm,紫外光波長范圍是200～400nm。所謂紫外可見分光光度計也就是說這個儀器可以通過更換光源形成紫外和可見的光區(qū)，三用紫外可見分光光度計現(xiàn)貨，能夠測定吸收峰在紫外和可見光部分的化合物。一般測定波長在200～1000nm。 </p> <p> 分光光度計的關(guān)鍵參數(shù)有哪些? </p> <p> 選擇可見和紫外可見的分光光度計所關(guān)注的關(guān)鍵的指標有三點：一是波長范圍，二是波長準確度，三用紫外可見分光光度計現(xiàn)貨，三是雜散光參數(shù)。波長范圍的選擇是由用戶實驗需要所定，波長范圍越寬的價格越貴;波長準確度及雜散光參數(shù)的數(shù)值越低，三用紫外可見分光光度計現(xiàn)貨，表示性能越好。紫外可見分光光度計應安裝在太陽不能直接曬到的地方，以免“室光” 太強，影響儀器的使用壽命。三用紫外可見分光光度計現(xiàn)貨</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="三用紫外可見分光光度計現(xiàn)貨,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592124342670/5540999.png"></div><p> 紫外可見分光光度計是一類很重要的實驗室分析儀器，無論在物理學、化學、生物學、醫(yī)學、材料學、環(huán)境科學等科學研究領(lǐng)域，還是在化工、醫(yī)藥、環(huán)境檢測、冶金等現(xiàn)代化生產(chǎn)與管理部門，紫外可見分光光度計都有面向廣的應用。 </p> <p> 紫外可見分光光度計校正 </p> <p> 開機預熱10分鐘足矣； </p> <p> 放入黑塊和標樣（沒有的自己配），關(guān)閉蓋子； </p> <p> 校0； </p> <p> 把燈光對著黑塊，把透光度調(diào)0； </p> <p> 把燈光對標樣，將吸光度調(diào)到100%。 </p> <p> 紫外可見分光光度計使用注意事項 </p> <p> 開機前應先預熱15分鐘，然后開機自檢； </p> <p> 濕度要控制在75%左右，溫度在5～30度之間； </p> <p> 儀器要穩(wěn)壓電源，接地要好。并且避免陽光直接照射。中國**紫外可見分光光度計比較紫外光分光光度計分為單光束和雙光束兩類。單光束型主要是依賴單束光進行測量。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="三用紫外可見分光光度計現(xiàn)貨,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594849245086/5585171.png"></div><p> 當你什么都不了解的情況下，只選貴的，準沒錯。在某種程度上，這句話具有一定的適用性。但是，新型儀器一般價格較貴，如果過度放寬儀器預算，而追加經(jīng)費采購不需要的配件也是一種浪費。如何快速簡單的掌握紫外可見分光光度計的特性，從而進行合適的采購定位，小編將所需要的知識點總結(jié)如下。 </p> <p> 認識紫外可見光分光光度計使用范圍。任何一臺儀器都不是解決所有問題的同一把鑰匙。多問自己幾個問題：需要一臺什么樣的儀器，要用它來做什么，分析的樣品的形態(tài)、所需要的測試范圍以及精度要求在哪里等等。理清楚這些，儀器的基本輪廓就畫出來了。 </p> <p> 紫外可見光分光光度計作為一種常規(guī)的實驗室分析儀器，可以常用于無機物、有機物的定性定量分析，所使用的科研領(lǐng)域包括：科研、制藥、化工、環(huán)保、衛(wèi)生等需要分析的關(guān)鍵領(lǐng)域。 </p>紫外可見分光光度計使用中常見問題解析 <p> 在一般分光光度計的使用說明書上，要求儀器預熱時間約20分鐘；若是帶微處理器的分光光度計，開機后儀器自動進入自檢(初始化)狀態(tài)，約需1O分鐘左右。在分光光度計預熱這個環(huán)節(jié)上，很多使用者或多或少存在問題，如開機只預熱電路系統(tǒng)(不調(diào)節(jié)波長、打開吸收池暗箱蓋預熱等)或認為初始化過程就是預熱等等。對帶微處理器有自檢功能的分光光度計，開機后儀器自檢(初始化)結(jié)束后，在測定窗口上，設(shè)置所需波長值，用一個吸收池裝上純凈水置于光路上，調(diào)“0000A”后，預熱儀器，當儀器顯示讀數(shù)不再變化后即可進行測定。 </p> <p> 對于紫外可見分光光度計，由于有雙光源(鎢燈與氘燈)，為了延長燈的使用壽命，開機自檢完成后可以關(guān)掉測定時不用的光源燈。紫外分光光度計的帶寬（bandwidth）很大程度上依賴于單色儀的狹縫的寬度。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="三用紫外可見分光光度計現(xiàn)貨,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594874577336/8128483.png"></div><p> 使用紫外可見分光光度計時需要注意哪些方面？ </p> <p> 1、使用的吸收池必須潔凈，并注意配對使用。量瓶、移液吸管均應校正、洗凈后使用。 </p> <p> 2、取吸收池時，手指應拿毛玻璃面的兩側(cè)，裝盛樣品以池體的4/5為度，使用揮發(fā)性溶液時應加蓋，透光面要用擦鏡紙由上而下擦拭干凈，檢視應無溶劑殘留。吸收池放入樣品室時應注意方向相同。用后用溶劑或水沖洗干凈，晾干防塵保存。 </p> <p> 3、供試品溶液濃度除各該品種已有注明外，其吸收度以在0.3～0.7之間為宜。 </p> <p> 4、測定時除另有規(guī)定外，應以配制供試品溶液的同批溶劑為空白對照，采用1cm石英吸收池，在規(guī)定的吸收峰±2nm以內(nèi)，測幾個點的吸收度或由儀器在規(guī)定的波長附近自動掃描測定，以核對供試品的吸收峰位置是否正確，并以吸收度MAX的波長作為測定波長，除另有規(guī)定外吸收度MAX波長應在該品種項下規(guī)定的測定波長±2nm以內(nèi)。 </p> <p> 5、供試品應取2份，如為對照品比較法，對照品一般也應取2份。平行操作，每份結(jié)果對平均值的偏差應在±0.5%以內(nèi)。 </p> <p> 6、選用儀器的狹縫寬度應小于供試品吸收帶的半寬度，否則測得的吸收度值會偏低，狹縫寬度的選擇應以減少狹縫寬度時供試品的吸收度不再增加為準，對于大部分被測品種，可以使用2nm縫寬。<span style="display:none;"></span> 初次使用紫外可見分光光度計的人員，一般來說，一定要詳細閱讀儀器安全操作手冊。分析檢測紫外可見分光光度計現(xiàn)貨</p><p style="text-indent:25px">分光光度計元器件方面，經(jīng)歷了棱鏡、機刻光柵和全息光柵，商品化的全息閃耀光柵已迅速取代一般刻劃光柵。三用紫外可見分光光度計現(xiàn)貨</p><p> 紫外可見分光光度計條件設(shè)定 </p> <p> 在定量分析中，為了提高測定的靈敏度，入射光的波長應選擇被測物的MAX吸收波長λmax，如果λmax有干擾，可選擇另一條靈敏度稍低、但能避免干擾的譜線，所以，適當選擇入射光的波長，不*能提高測定的靈敏度，還能提高測定的準確度。 </p> <p> 狹縫寬度過大，入射光的單色性差；狹縫寬度太小，入射光的強減弱。狹縫寬度過大或過小均會造成靈敏度降低，選擇是產(chǎn)生MIN誤差情下的MAX狹縫。一般選用儀器的狹縫寬琶度應小于待測樣品吸收帶的半寬度，否則測得的吸光度值會偏低，狹縫寬度的選擇應以減少狹縫寬度時供試品的吸光度不再；加為準，對于大部分被測品種，可以使用2nm縫寬。 </p> <p> 可通過控制被測物濃度或改變吸收池厚度來實現(xiàn)吸光度合理的范圍，以盡量減小測量誤差。一般吸光度盡量控制在0.1-0.8范圍。 </p> <p> 空白溶液是用來調(diào)節(jié)吸光度測量工作零點即A=0，T=100%的溶液，以消除溶液中其它基體組分以及吸收池和溶劑對入射光的反射和吸收所帶來的誤差。根據(jù)情況不同，常用空白溶液有如下幾種選擇。 </p> <p> <br /> 三用紫外可見分光光度計現(xiàn)貨</p><p style="text-indent:25px">上海儀電分析儀器有限公司位于徐塘路88號7幢4層、9幢，是一家專業(yè)的儀器儀表、電子元器件及相關(guān)的系統(tǒng)集成的生產(chǎn)、服務及銷售，計算機軟件開發(fā)及銷售，從事貨物進出口及技術(shù)進出口業(yè)務?！疽婪毥?jīng)批準的項目，經(jīng)相關(guān)部門批準后方可開展經(jīng)營活動】儀器儀表、電子元器件及相關(guān)的系統(tǒng)集成的生產(chǎn)、服務及銷售，計算機軟件開發(fā)及銷售，從事貨物進出口及技術(shù)進出口業(yè)務?！疽婪毥?jīng)批準的項目，經(jīng)相關(guān)部門批準后方可開展經(jīng)營活動】公司。專業(yè)的團隊大多數(shù)員工都有多年工作經(jīng)驗，熟悉行業(yè)專業(yè)知識技能，致力于發(fā)展儀電分析,上分的品牌。公司不**提供專業(yè)的儀器儀表、電子元器件及相關(guān)的系統(tǒng)集成的生產(chǎn)、服務及銷售，計算機軟件開發(fā)及銷售，從事貨物進出口及技術(shù)進出口業(yè)務?！疽婪毥?jīng)批準的項目，經(jīng)相關(guān)部門批準后方可開展經(jīng)營活動】儀器儀表、電子元器件及相關(guān)的系統(tǒng)集成的生產(chǎn)、服務及銷售，計算機軟件開發(fā)及銷售，從事貨物進出口及技術(shù)進出口業(yè)務?！疽婪毥?jīng)批準的項目，經(jīng)相關(guān)部門批準后方可開展經(jīng)營活動】，同時還建立了完善的售后服務體系，為客戶提供良好的產(chǎn)品和服務。誠實、守信是對企業(yè)的經(jīng)營要求，也是我們做人的基本準則。公司致力于打造***的分光光度計，氣相色譜，原子吸收，食品安全。</p></p><br /><p>文章來源地址: 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