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id="search">搜索</a></div></div></div></div></header><nav class="navbox"><div id="7ajvxe2" class="container"><ul><li id = "index_index"><a href="http://m.cdcfah.com/"><span>首頁</span></a></li><li id = "index_company"><a ><span>企業(yè)名錄</span></a></li><li id = "index_product"><a href="http://m.cdcfah.com/cp/"><span>產(chǎn)品供應(yīng)</span></a></li><li id = "index_news"><a href="http://m.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a href="http://m.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a href="http://m.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="kbn23sr" class="twoCol"><div id="t8ixt3t" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://m.cdcfah.com/">首頁?<a href="http://m.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://m.cdcfah.com/cp/first-_yiqiyibiao/">儀器儀表</a>?<a href="http://m.cdcfah.com/cp/second-yiqiyibiao_gxyq/">光學(xué)儀器</a>?<a href="http://m.cdcfah.com/cp/third-gxyq_gpygdj/">光譜儀、光度計</a>?環(huán)境檢測紫外可見分光光度計排行鑄造輝煌上海儀電分析儀器供應(yīng)</p><div id="wctv33l" class="leftbox clearfix"><h1>環(huán)境檢測紫外可見分光光度計排行鑄造輝煌上海儀電分析儀器供應(yīng)</h1><div id="fc8sw4l" class="proBig"><div id="rv3wtsr" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594919157259/9098588.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="mq3moc8" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594919157259/9098588.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qf2qnp4" 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>環(huán)境檢測紫外可見分光光度計排行,紫外可見分光光度計</p><p><span>***更新：</span>2020-11-03 00:31:14</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="jncjbix" 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(jī): </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="3sumofz" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="wfc387f" class="box"><p><p> 光譜范圍紫外可見光譜區(qū)通常指190nm～780nm的波長范圍，但實際的分光光度計設(shè)計中，經(jīng)常將波長向長波方向拓展，進(jìn)入短波近紅外區(qū)。在120多種國外產(chǎn)品中，有52種波長≤900nm，其中≤800nm的*11種。而>900nm的有72種，占了多數(shù)。固定光柵型受硅陣列探測器的限制，1100nm是其波長的上限。掃描光柵型使用分立光電器件，波長的擴(kuò)展更為靈活。 </p> <p> 波長的準(zhǔn)確性：*有16種偏差超過1nm，其余大多在01～1之間。其中突出的是Varian的Cary100/300，它們在6561nm處的波長準(zhǔn)確性達(dá)到了002nm的水平。波長重復(fù)性大于05nm的*7種，01～05nm之間的占了多數(shù)，共有68種，還有相當(dāng)數(shù)量的產(chǎn)品達(dá)到了優(yōu)于01nm的水平。如Agilent的8453(002)、Beckman的DU7000series(005)、Camspec的M400T/PC(005)、GBC的Centra10/20/40(004)、Hitachi的U3010/3310(005)，環(huán)境檢測紫外可見分光光度計排行、PerkinElmer的Lambda系列(002～005)、ScincoCO的S-1100/3130/3150(002)，環(huán)境檢測紫外可見分光光度計排行、Shimadzu的MS1500(001)和UV1201(003)、Varian的Cary系列(0008～0025)等。雖然從原理上，固定光柵型的設(shè)計結(jié)構(gòu)固定，環(huán)境檢測紫外可見分光光度計排行、簡單，易于實現(xiàn)好的波長準(zhǔn)確性和重復(fù)性，但掃描光柵的設(shè)計制造工藝已十分成熟。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。環(huán)境檢測紫外可見分光光度計排行</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="環(huán)境檢測紫外可見分光光度計排行,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594919157259/9098588.png"></div><p>光源和檢測方法（LIGHTSOURCESANDDETECTION）分光光度計的光譜也是需要考慮的一個重要因素。實驗室研究人員希望省錢購入專門儀器定量核酸、蛋白或者細(xì)菌的生長情況。例如AmershamBiosciencesofPiscataway公司的GeneQuantII能在230、260、280、320、595和600nm的波長下測量樣品。果果需要更大的靈活性，研究者可以考慮一種更高性能的寬光譜儀器，可以程序性地進(jìn)行ELISAs分析和比色分析。</p><p>紫外分光光度計一般覆蓋190nm和380nm波長，通常利用氘燈照明。一些特殊的儀器可以提供滿足光子學(xué)和半導(dǎo)體研究需要的光譜范圍。VarianofPaloAlto公司的CaryDeepUV和HitachiHighTechnologiesofTokyo的U-7000AutomatedVacuumUVSystem就是這樣的儀器。</p><p>一些儀器具有多種光源供選擇：紫外光、可見光和甚至紅外光（780nm至3,000nm）。鎢燈和鹵素?zé)粢话阒桓采w可見光部分（大約380nm到800nm）。而氙燈則可以覆蓋紫外光和可見光區(qū)域。環(huán)境檢測紫外可見分光光度計排行紫外可見分光光度計在開機(jī)前將樣品室內(nèi)的干燥劑取出，儀器自檢過程中禁止打開樣品室蓋。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="環(huán)境檢測紫外可見分光光度計排行,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592216930546/1658567.png"></div><p> 紫外分光光度計做不準(zhǔn)？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(dāng)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> 可見分光光度計是一種常規(guī)的實驗室分析儀器?？沙Ｓ糜跓o機(jī)物、有機(jī)物的定性、定量分析中，在科研、制藥、化工、環(huán)保、衛(wèi)生、防疫等領(lǐng)域中發(fā)揮重要的作用。有人說，紫外、可見分光光度計就是一把尺子一個天平，凡是有化驗、分析的地方都能用到它。那么，如何評價一臺紫外、可見分光光度計的優(yōu)劣呢? </p> <p> 要考察它的外觀。試想，一臺外型呆板、做工粗糙的儀器，怎么可能是一臺先進(jìn)的儀器呢? </p> <p> 我們探討一下會對儀器的使用有很大影響的幾個重要指標(biāo) </p> <p> <p> 1、光度準(zhǔn)確度 </p> <p> 2、雜散光 </p> <p> 3、光譜帶寬 </p> <p> 4、穩(wěn)定性 </p> <p> 5、噪聲 </p> <p> 6、波長的準(zhǔn)確度和重復(fù)性 </p> <p> <br /> </p> 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><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="環(huán)境檢測紫外可見分光光度計排行,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593808795839/2949755.png"></div>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(yù)熱時間約20分鐘；若是帶微處理器的分光光度計，開機(jī)后儀器自動進(jìn)入自檢(初始化)狀態(tài)，約需1O分鐘左右。在分光光度計預(yù)熱這個環(huán)節(jié)上，很多使用者或多或少存在問題，如開機(jī)只預(yù)熱電路系統(tǒng)(不調(diào)節(jié)波長、打開吸收池暗箱蓋預(yù)熱等)或認(rèn)為初始化過程就是預(yù)熱等等。對帶微處理器有自檢功能的分光光度計，開機(jī)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(yù)熱儀器，當(dāng)儀器顯示讀數(shù)不再變化后即可進(jìn)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(jī)自檢完成后可以關(guān)掉測定時不用的光源燈。在分光光度計的使用或檢定中,透射比(吸光度)的準(zhǔn)確度直接關(guān)系到所測數(shù)據(jù)的可信性及科學(xué)性。常見紫外可見分光光度計比較</p><p style="text-indent:25px">為了選擇合適的狹縫寬度，應(yīng)以減少狹縫寬度時紫外分光光度計試樣的吸光度不再增加為準(zhǔn)。環(huán)境檢測紫外可見分光光度計排行</p><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(chǎn)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(cè)為毛玻璃，另兩面為光學(xué)透光面。根據(jù)光學(xué)透光面的材質(zhì)，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(biāo)志。常用的吸收池規(guī)格有0.5cm、1.0cm、2.0cm、3.0cm、5.0cm等。環(huán)境檢測紫外可見分光光度計排行</p><p style="text-indent:25px">上海儀電分析儀器有限公司屬于儀器儀表的高新企業(yè)，技術(shù)力量雄厚。儀電分析是一家有限責(zé)任公司企業(yè)，一直“以人為本，服務(wù)于社會”的經(jīng)營理念;“誠守信譽(yù)，持續(xù)發(fā)展”的質(zhì)量方針。公司業(yè)務(wù)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(zhì)有保證，深受廣大客戶的歡迎。儀電分析以創(chuàng)造***產(chǎn)品及服務(wù)的理念，打造高指標(biāo)的服務(wù)，引導(dǎo)行業(yè)的發(fā)展。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/1819932.html</p></div></div></div></div></div><div id="r77ph2s" class="page-right twoColRt"><div id="2i3npwb" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="nmzgdpr" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" 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