可靠紫外可見分光光度計單價誠信互利上海儀電分析儀器供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="雜散光：典型值是0.01～0.05%T，在國外的產(chǎn)品中有65種產(chǎn)品的雜散光指標(biāo)在這一范圍中。雜散光超過0.05%T的產(chǎn)品有31種，小于0.01%T的產(chǎn)品有19種。。從其光學(xué)設(shè)計看，都采用了雙單色器。與掃描光柵型產(chǎn)品相比，固定光柵的分光光度計"><meta name="keywords" content="可靠紫外可見分光光度計單價,紫外可見分光光度計"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" 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href="http://www.cdcfah.com/cp/third-gxyq_gpygdj/">光譜儀、光度計</a>?可靠紫外可見分光光度計單價誠信互利上海儀電分析儀器供應(yīng)</p><div id="gi00qek" class="leftbox clearfix"><h1>可靠紫外可見分光光度計單價誠信互利上海儀電分析儀器供應(yīng)</h1><div id="gmumuam" class="proBig"><div id="mo2miui" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593139440396/4585287.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="g8cq88q" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593139440396/4585287.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="i8oemcq" 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>可靠紫外可見分光光度計單價,紫外可見分光光度計</p><p><span>***更新：</span>2020-11-25 17:45:22</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="mye0sqy" 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(dāng)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="o0yociy" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ou0082y" class="box"><p><p> 雜散光：典型值是0.01～0.05%T，在國外的產(chǎn)品中有65種產(chǎn)品的雜散光指標(biāo)在這一范圍中。雜散光超過0.05%T的產(chǎn)品有31種，小于0.01%T的產(chǎn)品有19種。。從其光學(xué)設(shè)計看，都采用了雙單色器。與掃描光柵型產(chǎn)品相比，固定光柵的分光光度計少了出射狹縫，實現(xiàn)低雜散光的難度更大。從性能指標(biāo)來看，范圍是0.01～1%T。26種固定光柵型產(chǎn)品中雜散光在0.01～0.05%T之間的有13種，也已達(dá)到半數(shù)，但是能夠低于0.01%T的很少。波長準(zhǔn)確性，國外的典型水平是0.1～1nm，可靠紫外可見分光光度計單價。國內(nèi)產(chǎn)品中，處于此范圍的有16種，基本達(dá)到同一水平，但沒有優(yōu)于0.1nm的產(chǎn)品。國內(nèi)產(chǎn)品的光度準(zhǔn)確性大多以透過率表示，水平比較接近，均在0.3～0.5%T之間。在10%T處，也就是吸光度為1A處，將光度準(zhǔn)確性以吸光度表示，則數(shù)值為0.013～0.021A。與國外產(chǎn)品有比較明顯的差距。國內(nèi)產(chǎn)品的光度重復(fù)性基本在0.1～0，可靠紫外可見分光光度計單價.3%T范圍，可靠紫外可見分光光度計單價，同樣在吸光度1A處換算，數(shù)值為0.004～0.013A，也存在距離。比較國外與國內(nèi)產(chǎn)品的雜散光的典型值，兩者幾乎相差了一個數(shù)量級。但是已有一些較新研發(fā)的產(chǎn)品，可以達(dá)到國外產(chǎn)品的普遍水準(zhǔn)。現(xiàn)在的許多紫外分光光度計裝的是“長壽”型燈源，據(jù)說氘燈可達(dá)2000小時，鎢燈3000小時。可靠紫外可見分光光度計單價</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="可靠紫外可見分光光度計單價,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593139440396/4585287.png"></div><p style="text-indent:25px">使用紫外可見分光光度計進(jìn)行定量和定性分析需注意以下一些問題：1吸光度讀數(shù)范圍：吸光度測量誤差在透過率過大或過小時都會變大，為了滿足定量分析的誤差要求（<5%），在定量分析時要求吸光度應(yīng)在一定的范圍內(nèi)，這個范圍的具體值與儀器性能有關(guān)，主要是與紫外可見分光光度計檢測系統(tǒng)噪聲大小有關(guān)，但通常都在0.1~1.0范圍內(nèi)，如果儀器的檔次更低，則范圍更窄。根據(jù)朗伯比爾定律，影響吸光度大小的因素主要是樣品摩爾吸光系數(shù)，濃度和比色皿光程。實驗中吸光度過大的樣品可通過稀釋樣品使吸光度到所需范圍內(nèi)。如果樣品不能稀釋，可以改用光程較小的比色皿減小吸光度。吸光度過小的樣品可使用光程較大的比色皿以增大吸光度。水質(zhì)紫外可見分光光度計經(jīng)銷商在操作紫外可見分光光度計時，操作人員需要留意一下機器的干燥劑。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="可靠紫外可見分光光度計單價,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594919157259/9098588.png"></div><p> 雙光束UV：經(jīng)棱鏡分光后通過光柵，加強了靈敏度，同時測量空白樣品與目標(biāo)樣品的優(yōu)點，全波段分析時間長。全波段UV：樣品與空白樣品可以暴露在空氣中，照射樣品后，進(jìn)入密閉箱，通過光柵，進(jìn)入DAD檢測器檢測。檢測樣品不需要密閉，外界光線對測試無影響，使用方便準(zhǔn)確且空白只需要檢測一次，全波段分析時間小于1s。 </p> <p> 紫外可見光分光光度計的體積大小以及外觀美學(xué)性。紫外可見分光光度計的儀器體積大小，會牽扯儀器所需要的擺放位置以及儀器使用的方便程度。 </p> <p> 儀器的外形美觀，給人以大氣、上檔次、舒適、新鮮的感覺。首先，會讓使用儀器者對儀器分外的愛護(hù)、維護(hù)和保養(yǎng)，有利于延長儀器的使用壽命。同時，也會讓儀器使用者的工作環(huán)境更舒適、優(yōu)美，也有利于提高工作效率。 </p> <p> 紫外可見光分光光度計儀器使用范圍。紫外可見光分光光度的使用范圍是有儀器的性能指標(biāo)所決定。采購紫外可見光分光光度計根據(jù)測試樣品的具體要求，參考儀器的使用范圍，滿足即可，不必苛求。當(dāng)然，土豪可以忽略。 </p><p style="text-indent:25px">紫外-可見分光光度計的類型很多，根據(jù)儀器結(jié)構(gòu)可分為單光束分光光度計、雙光束分光光度計和雙波長分光光度計三種，其中單光束分光光度計和雙光束分光光度計屬于單波長分光光度計。1.單光束分光光度計從光源發(fā)出的光經(jīng)單色器分光后得到一束單色光，通過吸收池后，然后照射在檢測器上始終為一束光，如下圖所示。該類型的分光光度計結(jié)構(gòu)簡單、價格便宜，但由于其雜散光、光源波動等影響很大，所以準(zhǔn)確度較差。雙光束分光光度計從光源發(fā)出的復(fù)合光經(jīng)單色器分光后的單色光被反射鏡（切光器）分為強度相等的兩束光，分別通過參比溶液和樣品溶液，如下圖所示。由于兩束光同時通過參比溶液和樣品溶液，因此能夠自動消除光源強度變化所引起的誤差。雙光束分光光度計一般能自動記錄吸收光譜曲線，其靈敏度較好，但結(jié)構(gòu)較復(fù)雜、價格較貴。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="可靠紫外可見分光光度計單價,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593808795839/2949755.png"></div><p> 原子吸收分光光度計（AAS）：分析定量金屬原子（除冷原子），利用高溫使原子獲得能量變?yōu)榧ぐl(fā)態(tài)，當(dāng)原子回歸到基態(tài)時用相應(yīng)的我陰極燈照射來檢測含量。主要分火焰法、石墨爐法和氫化物發(fā)生器法。 </p> <p> 紅外：紅外分近紅外、中紅外和遠(yuǎn)紅外三種儀器。 </p> <p> 近紅外：用來定性不對稱的官能團(tuán)，從而定性某種化學(xué)物質(zhì)。紅外的原理是紅外光所產(chǎn)生高能給予分子，分子產(chǎn)生震動，從振幅來檢測官能團(tuán)。所以，不對稱，是前提。對稱了就看不出振幅了。一般多為手持式。 </p> <p> 中紅外：俗稱的紅外，用來定性或定量不對稱官能團(tuán)，從而定性或定量某種化學(xué)物質(zhì)。相比于近紅外增加了可以定量的技能！尤其是對同分異構(gòu)體的定量由為明顯！原理還是震動。沒有手持式。 </p> <p> 遠(yuǎn)紅外：實驗室一般沒有。傳統(tǒng)單光束UV紫外測試，測試過程全程封閉，單光束光源只通過光柵直接照射樣品，再經(jīng)光電倍增管檢測器檢測?？煽孔贤饪梢姺止夤舛扔媶蝺r</p><p style="text-indent:25px">在水質(zhì)的常規(guī)監(jiān)測中，紫外可見分光光度法占有較大的比重，待測物的濃度和干擾物的濃度差別很大?？煽孔贤饪梢姺止夤舛扔媶蝺r</p><p style="text-indent:25px">隨著現(xiàn)在科學(xué)技術(shù)的發(fā)展，儀器儀表行業(yè)發(fā)生了突飛猛進(jìn)的發(fā)展，再加上當(dāng)前計算機技術(shù)、網(wǎng)絡(luò)技術(shù)的進(jìn)步和發(fā)展，組建網(wǎng)絡(luò)而構(gòu)成實用的監(jiān)控系統(tǒng)，可以提高生產(chǎn)效率和共享信息資源方向發(fā)展。當(dāng)前儀器儀表行業(yè)產(chǎn)品發(fā)展呈現(xiàn)微型化、多功能化、智能化、網(wǎng)絡(luò)化四大發(fā)展趨勢。進(jìn)一步提升我國儀器儀表技術(shù)和水平，有限責(zé)任公司企業(yè)要順應(yīng)產(chǎn)業(yè)發(fā)展潮流，在穩(wěn)固常規(guī)品種的同時，進(jìn)一步發(fā)展智能儀器儀表，提升產(chǎn)業(yè)數(shù)字化、智能化、集成化水平。伴隨移動互聯(lián)網(wǎng)的爆發(fā)式增長，如今，它已經(jīng)漸漸取代電子商務(wù)成為了整個互聯(lián)網(wǎng)產(chǎn)業(yè)增速最快的領(lǐng)域，而移動終端的入口也隨即成為了傳統(tǒng)行業(yè)的必爭之地。分光光度計，氣相色譜，原子吸收，食品安全行業(yè)進(jìn)軍移動互聯(lián)網(wǎng)實現(xiàn)線上發(fā)展勢在必行。為迎接生產(chǎn)型百年未有之大變局，行家認(rèn)為，要重新定義中國在世界經(jīng)濟版圖中的地位，要順應(yīng)形勢實現(xiàn)制造升級。以華立集團(tuán)在境外開發(fā)“中國工業(yè)園”的成功案例來闡述，跨國經(jīng)營要成為企業(yè)主動的戰(zhàn)略選擇，在不確定性中更好地活下去，以全球化視野看問題，很多困惑在全球化過程中會迎刃而解?？煽孔贤饪梢姺止夤舛扔媶蝺r</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，是一家生產(chǎn)型的公司。公司業(yè)務(wù)分為分光光度計，氣相色譜，原子吸收，食品安全等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶提供良好的產(chǎn)品和服務(wù)。公司將不斷增強企業(yè)重點競爭力，努力學(xué)習(xí)行業(yè)知識，遵守行業(yè)規(guī)范，植根于儀器儀表行業(yè)的發(fā)展。在社會各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造高品質(zhì)服務(wù)體驗，為客戶成功提供堅實有力的支持。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2140444.html</p></div></div></div></div></div><div id="8qma0sa" class="page-right twoColRt"><div id="8wmk8i0" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="mg8ymms" 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(yīng)" 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(yīng)</p></a></div><div id="sy8wuay" class="recomPic likePro"><a 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