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"index_news"><a href="http://www.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a href="http://www.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="nv3efwn" class="twoCol"><div id="umqbzpg" 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>?國產**紫外可見分光光度計差價誠信互利上海儀電分析儀器供應</p><div id="fo88o43" class="leftbox clearfix"><h1>國產**紫外可見分光光度計差價誠信互利上海儀電分析儀器供應</h1><div id="egvgcyp" class="proBig"><div id="3npgnpv" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594874577336/8128483.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="fndz8om" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594874577336/8128483.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="2rnpr3n" 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>產品關鍵詞：</span>國產**紫外可見分光光度計差價,紫外可見分光光度計</p><p><span>***更新：</span>2020-11-12 02:18:51</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="pdjkb4v" 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="nv39lep" class="page-proshow02"><p class="title">詳細說明</p><div id="8d2aw9w" class="box"><p><p> 我們都知道，紫外-可見分光光度計是實驗室中出鏡率相當高的分析儀器。 </p> <p> 那么你的使用情況如何呢？ </p> <p> 你所關注紫外-可見分光光度計的哪些性能？ </p> <p> 大家都來說說吧！分光光度法是通過測定被測物質，在特定波長處或一定波長范圍內光的吸光度或發(fā)光強度，對該物質進行定性和定量分析的方法。紫外-可見分光光度計是元析儀器引用新型技術，其功能強大，采用單色器技術，波長范圍190-1100nm，是各種涉及水和廢水分析領域的通用儀器，國產**紫外可見分光光度計差價，應用范圍包括化工分析以及市政和工業(yè)廢水，飲用水，國產**紫外可見分光光度計差價，國產**紫外可見分光光度計差價，加工過程用水，地表水，冷卻水和鍋爐補給水等液體的分析。外可見分光光度計經不斷改進，又出現(xiàn)自動記錄、自動打印、數(shù)字顯示、微機控制等各種類型的儀器。國產**紫外可見分光光度計差價</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="國產**紫外可見分光光度計差價,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594874577336/8128483.png"></div><p> 光柵實現(xiàn)上就是一系列等寬、等距離的平行狹縫，它是利用光的衍射與干涉作用制成的。光柵作為色散元件具有不少獨特的優(yōu)點，光柵單色器的分辨率比棱鏡單色器的分辨率高，可精確到0.2nm，而且可用的波長范圍也比棱鏡單色器的范圍寬。所以，目前生產的紫外可見分光光度計大多采用光柵作為色散元件。 </p> <p> 吸收池是用于盛裝待測液并決定待測溶液透光液層厚度的器皿，又稱比色皿。吸收池一般為長方體，也有圓形或其它形狀的。其底及兩側為毛玻璃，另兩面為光學透光面。根據光學透光面的材質，吸收池又可分為玻璃吸收池和石英吸收池兩種。玻璃吸收池用于可見光區(qū)測定，石英吸收池用于紫外光區(qū)的測定。吸收池的規(guī)格以光程為標志。常用的吸收池規(guī)格有0.5cm、1.0cm、2.0cm、3.0cm、5.0cm等。國產紫外可見分光光度計報價紫外分光光度計可用于藥品的鑒別、純度檢查及含量測定，既可以定性分析，又可以定量分析。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="國產**紫外可見分光光度計差價,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592155319523/9592810.png"></div><p> 進行單波長測量時，需要考慮朗伯比爾定律對入射光單色性的要求和測定靈敏度的要求。沒有干擾時，一般選擇在吸收峰的MAX吸收波長位置處，如果有干擾，選擇在沒有干擾且吸光度變化較平緩的位置。進行多波長校正時，除盡量滿足單波長測定的波長要求外，還要求多個組分間的吸收光譜間線性無關。 </p> <p> 紫外分光光度計狹縫的大小會影響到儀器的信噪比和標準曲線的線性范圍。狹縫過大，通常會使線性范圍變小，特別是當不在MAX吸收波長位置測定時更是如此。狹縫過小，信噪比變差，基線平直度和測量數(shù)據的重復性會變差。此外，還需要考慮樣品吸收峰寬度的影響。通常單波長測定時，一般選擇在MAX吸收波長位置，線性范圍容易滿足，可選擇較寬的狹縫（1~2nm）多波長測定時，很難同時在所有波長都滿足線性范圍要求，應選擇比較小的狹縫。 </p><p> 使用紫外分光光度計的過程中，經常會遇到儀器因光源達不到要求，需要進行調修。要求光源燈處不能有空氣流動，因為單光束儀器很忌諱空氣快速流動而使光源燈的色溫發(fā)生變化。如遇電壓正常而鎢燈不亮時，就需要更換鎢燈。更換時，不要用手直接接觸燈泡表面，如果手指摸過，應用無水乙醇和C4H10O混合液擦拭干凈，否則通電后指印遇熱不能去除。安裝光源燈后要注意調整光路。光源燈有兩個引線頭，安裝時用導線焊接，主要是防止接觸不良而造成的光源發(fā)光不穩(wěn)現(xiàn)象。在焊接時防止焊點與燈頭銅皮碰上，裝上燈座使電源短路。燈絲要求平直，如果燈絲彎曲，會影響光能量。燈絲的位置要與入射狹縫平行并對準，上、下、左、右調節(jié)后緊固螺釘。擰緊燈座的螺紋套，可用鉗子擰緊，一般燈頭盡量往燈座里塞，因為多數(shù)燈絲離燈頭偏高。調整燈位置的前后可移動整個燈座架，它下面有三個固定螺釘，先稍松后，移動前后位置再固定。一般調節(jié)鎢燈的位置時，將波長調到580nm處，狹縫調到MAX，把一張白紙置于比色皿盒邊出口處，觀察白紙上的光斑。若光斑上方左右角均不完整成半圓弧，可能是光源燈高度不對；光斑左邊或右邊不完整，可調光源燈底座位置。調整至白紙上可見明亮、均勻的長方形黃橙色光斑。紫外可見分光光度計，可以通過更換光源分別形成可見和紫外光區(qū)，測定的波長在200～1000nm。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="國產**紫外可見分光光度計差價,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593091764635/4502162.png"></div><p> 掌握紫外可見光分光光度計基本工作原理：一定頻率紫外可見光照射所需要分析的目標樣品，引起目標樣品中價電子發(fā)生躍遷，從而變現(xiàn)隨著吸收波長變化而引起光譜變化，形成可供分析數(shù)據。 </p> <p> 以朗伯-比耳定律(Lambert-beer)為理論基礎，特定波長吸收中，吸收程度正比于試樣成分濃度，因此，可進行光譜的定性分析。且根據吸收與已知濃度標樣比較，能進行定量分析。 </p> <p> 紫外可見光分光光度計種類及優(yōu)缺點對比：傳統(tǒng)機型：單光束UV、全程密閉、以光柵進行分光，標樣和測試樣品分別測試，全波段掃描時間至多2min；比例雙光束UV：單光束UV，全程密閉、經光柵再經棱鏡，全程密閉、標樣和測試樣品分別測試、測試靈敏度降低，全波段分析時間長。由于玻璃材質會吸收紫外線，所以目前市面上的紫外可見分光光度計都采用石英棱鏡。國產紫外可見分光光度計報價</p><p style="text-indent:25px">光學構造和光源、探測方法、樣品類型和數(shù)據處理等都是要考慮的因素。國產**紫外可見分光光度計差價</p><p> 752N紫外可見分光光度計產品介紹 </p> <p> 該產品采用微處理機控制技術在紫外可見光譜區(qū)域內對物質作定性、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轉換精度高，并有自動調0％T和調100％T，濃度因子設定、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，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比色皿架國產**紫外可見分光光度計差價</p><p style="text-indent:25px">上海儀電分析儀器有限公司是一家生產型類企業(yè)，積極探索行業(yè)發(fā)展，努力實現(xiàn)產品創(chuàng)新。是一家有限責任公司企業(yè)，隨著市場的發(fā)展和生產的需求，與多家企業(yè)合作研究，在原有產品的基礎上經過不斷改進，追求新型，在強化內部管理，完善結構調整的同時，良好的質量、合理的價格、完善的服務，在業(yè)界受到寬泛好評。公司業(yè)務涵蓋分光光度計，氣相色譜，原子吸收，食品安全，價格合理，品質有保證，深受廣大客戶的歡迎。儀電分析自成立以來，一直堅持走正規(guī)化、專業(yè)化路線，得到了廣大客戶及社會各界的普遍認可與大力支持。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1950861.html</p></div></div></div></div></div><div id="atawirx" class="page-right twoColRt"><div id="mubiftt" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="xqh8oxt" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應</p></a></div><div id="dwc32x3" class="recomPic likePro"><a 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