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class="twoCol"><div id="lmdpgcf" 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(yīng)</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(xué)儀器</a>?<a href="http://www.cdcfah.com/cp/third-gxyq_gpygdj/">光譜儀、光度計</a>?常用紫外可見分光光度計性價比服務(wù)為先上海儀電分析儀器供應(yīng)</p><div id="uriuqwc" class="leftbox clearfix"><h1>常用紫外可見分光光度計性價比服務(wù)為先上海儀電分析儀器供應(yīng)</h1><div id="m8c8wse" class="proBig"><div id="8arn2ct" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593980700101/5381945.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ay8gx3w" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593980700101/5381945.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ybkvmio" 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>常用紫外可見分光光度計性價比,紫外可見分光光度計</p><p><span>***更新：</span>2020-11-06 06:20:51</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="dg83lhy" 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="yzx8pqw" class="page-proshow02"><p class="title">詳細說明</p><div id="nefvrc3" class="box"><p><p style="text-indent:25px">紫外分光光度計檢測器是將光信號轉(zhuǎn)變?yōu)殡娦盘柕难b置，常用紫外可見分光光度計性價比。測量吸光度時，并非直接測量透過吸收池的光強度，而是將光強度轉(zhuǎn)換成電流進行測量，這種光電轉(zhuǎn)換器件稱為檢測器，又叫接受器。常用的檢測器有光電池、光電管、光電倍增管及光電二極管陣列檢測器等。光電池價格便宜，但長時間曝光，會使靈敏度降低。光電管的靈敏度比光電池高；光電倍增管不僅靈敏度比普通光電管高，而且響應(yīng)速度快，常用紫外可見分光光度計性價比，目前中，常用紫外可見分光光度計性價比、高性能分光光度計中一般采用它作為檢測器。光電二極管陣列檢測器是紫外可見分光光度計檢測的一個重要進展。實驗室選擇時需要根據(jù)自己實驗室的需要和目的用途來考慮。常用紫外可見分光光度計性價比</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常用紫外可見分光光度計性價比,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593980700101/5381945.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(xué)、化學(xué)、生物學(xué)、醫(yī)學(xué)、材料學(xué)、環(huán)境科學(xué)等科學(xué)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(yīng)用。 </p> <p> 紫外可見分光光度計校正 </p> <p> 開機預(yù)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(yīng)先預(yù)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。工業(yè)紫外可見分光光度計選擇在選擇紫外可見分光光度計之前，需要了解儀器的基礎(chǔ)構(gòu)架，有哪些地方是消耗品，有想哪些需要維修保養(yǎng)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常用紫外可見分光光度計性價比,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594849245086/5585171.png"></div><p> 紫外分光光度計做不準？比色皿出錯了唄。一文了解比色皿的正確使用，配對，洗滌。 </p> <p> 比色皿（cuvette）是一種用于光譜分析的裝備儀器。常用的主要是由石英粉燒制的石英比色皿和普通硅酸鹽光學(xué)玻璃制成的透光面比色皿。 </p> <p> 當然也有微量、半微量、熒光等比色皿出現(xiàn)。 </p> <p> 石英比色皿（Q/S）：適用波長范圍在190nm-2500nm（適用于紫外、可見、近紅外光區(qū)）價格較玻璃比色皿較貴 </p> <p> 玻璃比色皿（G）：適用波長范圍320nm-2500nm（不適用于紫外光區(qū)），價格相對便宜 </p> <p> 由上述數(shù)據(jù)可以看出石英比色皿完全可以代替玻璃比色皿使用，如果不用紫外區(qū)的話，用普通玻璃比色皿就行了，一則浪費沒必要，二則，嘿嘿，摔碎了也不心疼。至于微量、半微量、熒光等比色皿不常用就不在說了。 </p><p> <br /> </p> <p> 自從60年前紫外分光光度計出現(xiàn)在實驗室的工作臺之后，已經(jīng)形成了一種能解決大部分難題的儀器，從單一波長的測量到高性能多光譜的測量分析。實驗室選擇時需要根據(jù)自己實驗室的需要和目的用途來考慮，光學(xué)構(gòu)造和光源、探測方法、樣品類型和數(shù)據(jù)處理等都是要考慮的因素。 </p> <p> <br /> </p> <p> 光學(xué)構(gòu)造（OPTICALCONFIGURATION） </p> <p> <br /> </p> <p> 一般來說，紫外光分光光度計分為單光束和雙光束兩類。顧名思義，單光束型主要是依賴單束光進行測量。一束給定波長的光通過對照物，然后再通過實際樣品溶液，就能得到吸光結(jié)果。 </p> <p> <br /> </p> <p> <br /> </p> <p> 雙光束型則是通過一個斬光輪（mirroredchopperwheel）將一束光分成兩束，分別測量對照樣品和實際樣品?？梢訫IN光漂移（lampdrift）和減少測量時間。一些雙光型光度計不利用斬光輪，而是利用一種光束分光器來代替，將一束光分成兩束平行的光然后同時測量對照樣品和目的樣品。因為增加了測量的速度，所以雙光束分光光度計在測量一些溶液隨時間動態(tài)變化的研究中大有用處。 </p> <p> <br /> 分光光度計的氘燈和汞燈是在不同波長的時候有程序控制自動變換的，一般是在360nm處變換。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常用紫外可見分光光度計性價比,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592216930546/1658567.png"></div><p> 752N紫外可見分光光度計產(chǎn)品介紹 </p> <p> 該產(chǎn)品采用微處理機控制技術(shù)在紫外可見光譜區(qū)域內(nèi)對物質(zhì)作定性、定量分析，是常規(guī)實驗室必備的多用途分析儀器。 </p> <p> 主要特點： </p> <p> ●全息閃耀光柵單色器，具有波長精度高，單色性好，雜散光低等優(yōu)點。 </p> <p> ●全新液晶屏顯示，讀數(shù)清晰自然。 </p> <p> ●采用微機測量系統(tǒng)，T-A轉(zhuǎn)換精度高，并有自動調(diào)0％T和調(diào)100％T，濃度因子設(shè)定、濃度直讀。 </p> <p> ●測量讀數(shù)準確性高，重現(xiàn)性好和穩(wěn)定性佳。 </p> <p> ●自動光門技術(shù)，操作便捷。 </p> <p> 選配： </p> <p> ●熱敏繪圖打印機 </p> <p> ●**光譜軟件 </p> <p> ●5cm或10cm比色皿架紫外分光光度計的光柵是一系列等寬、等距離的平行狹縫，以光的衍射現(xiàn)象和干涉現(xiàn)象為基礎(chǔ)。工業(yè)紫外可見分光光度計賣價</p><p style="text-indent:25px">紫外可見分光光度計主要由光源系統(tǒng)、單色器系統(tǒng)、樣品室、檢測系統(tǒng)組成。常用紫外可見分光光度計性價比</p><p> 根據(jù)吸收光譜圖上的一些特征吸收，特別是MAX吸收波長λmax和摩爾吸收系數(shù)ε，是檢定物質(zhì)的常用物理參數(shù)。 </p> <p> 將分析樣品和標準樣品以相同濃度配制在同一溶劑中，在同一條件下分別測定紫外可見吸收光譜。若兩者是同一物質(zhì)，則兩者的光譜圖應(yīng)完全一致。如果沒有標樣，也可以和現(xiàn)成的標準譜圖對照進行比較。 </p> <p> 由于紫外吸收光譜只含有2～3個較寬的吸收帶，而紫外光譜主要是分子內(nèi)的發(fā)色團在紫外區(qū)產(chǎn)生的吸收，與分子和其它部分關(guān)系不大。具有相同發(fā)色團的不同分子結(jié)構(gòu)，在較大分子中不影響發(fā)色團的紫外吸收光譜，不同的分子結(jié)構(gòu)有可能有相同的紫外吸收光譜，但它們的吸收系數(shù)是有差別的。如果分析樣品和標準樣品的吸收波長相同，吸收系數(shù)也相同，則可認為分析樣品與標準樣品為同一物質(zhì)。 </p> <p> <span style="display:none;"></span> </p> <p> 紫外吸收光譜能測定化合物中含有微量的具有紫外吸收的雜質(zhì)。如果化合物的紫外可見光區(qū)沒有明顯的吸收峰，而它的雜質(zhì)在紫外區(qū)內(nèi)有較強的吸收峰，就可以檢測出化合物中的雜質(zhì)。 </p> <p> 不同的極性溶劑產(chǎn)生氫鍵的強度也不同，這可以利用紫外光譜來判斷化合物在不同溶劑中氫鍵強度，以確定選擇哪一種溶劑。 </p> <p> 金屬離子常與有機物形成絡(luò)合物，多數(shù)絡(luò)合物在紫外可見區(qū)是有吸收的，我們可以用分光光度法來研究其組成。常用紫外可見分光光度計性價比</p><p style="text-indent:25px">上海儀電分析儀器有限公司致力于儀器儀表，以科技創(chuàng)新實現(xiàn)***管理的追求。儀電分析作為儀器儀表、電子元器件及相關(guān)的系統(tǒng)集成的生產(chǎn)、服務(wù)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(wù)。【依法須經(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(wù)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(wù)?！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】的企業(yè)之一，為客戶提供良好的分光光度計，氣相色譜，原子吸收，食品安全。儀電分析不斷開拓創(chuàng)新，追求出色，以技術(shù)為先導(dǎo)，以產(chǎn)品為平臺，以應(yīng)用為重點，以服務(wù)為保證，不斷為客戶創(chuàng)造更高價值，提供更優(yōu)服務(wù)。儀電分析始終關(guān)注儀器儀表市場，以敏銳的市場洞察力，實現(xiàn)與客戶的成長共贏。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1871366.html</p></div></div></div></div></div><div id="rfg7zad" class="page-right twoColRt"><div 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