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src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593808795839/2949755.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="uycdxiu" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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>高效紫外可見分光光度計(jì)賣價(jià),紫外可見分光光度計(jì)</p><p><span>***更新：</span>2020-11-20 09:23:31</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="jselseb" 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(hào)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="w3x24h7" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="8hbce8i" class="box"><p><p> 752N紫外可見分光光度計(jì)產(chǎn)品介紹 </p> <p> 該產(chǎn)品采用微處理機(jī)控制技術(shù)在紫外可見光譜區(qū)域內(nèi)對(duì)物質(zhì)作定性、定量分析，是常規(guī)實(shí)驗(yàn)室必備的多用途分析儀器。 </p> <p> 主要特點(diǎn)： </p> <p> ●全息閃耀光柵單色器，具有波長(zhǎng)精度高，單色性好，雜散光低等優(yōu)點(diǎn)。 </p> <p> ●全新液晶屏顯示，讀數(shù)清晰自然，高效紫外可見分光光度計(jì)賣價(jià)。 </p> <p> ●采用微機(jī)測(cè)量系統(tǒng)，T-A轉(zhuǎn)換精度高，并有自動(dòng)調(diào)0％T和調(diào)100％T，濃度因子設(shè)定，高效紫外可見分光光度計(jì)賣價(jià)，高效紫外可見分光光度計(jì)賣價(jià)、濃度直讀。 </p> <p> ●測(cè)量讀數(shù)準(zhǔn)確性高，重現(xiàn)性好和穩(wěn)定性佳。 </p> <p> ●自動(dòng)光門技術(shù)，操作便捷。 </p> <p> 選配： </p> <p> ●熱敏繪圖打印機(jī) </p> <p> ●**光譜軟件 </p> <p> ●5cm或10cm比色皿架在分光光度計(jì)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(cè)數(shù)據(jù)的可信性及科學(xué)性。高效紫外可見分光光度計(jì)賣價(jià)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高效紫外可見分光光度計(jì)賣價(jià),紫外可見分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593808795839/2949755.png"></div><p> 紫外可見分光光度計(jì)的比色皿的洗滌方法 </p> <p> 1分光光度法中比色皿潔凈與否是影響測(cè)定準(zhǔn)確度的因素之一。因此，必須重視選擇正確的洗凈方法。 </p> <p> 俺的經(jīng)驗(yàn)是：要是你測(cè)定溶液是酸，如果不干凈，就用弱堿溶液洗，要是你測(cè)定溶液是堿，如果不干凈，就用弱酸溶液洗，要是你測(cè)定溶液是有機(jī)物質(zhì)，如果不干凈，就用有機(jī)溶劑，比如酒精等溶液洗。 </p> <p> 2選擇比色皿洗滌液的原則是去污效果好，不損壞比色皿，同時(shí)又不影響測(cè)定。 </p> <p> 2.1分析常用的鉻酸洗液不宜用于洗滌比色皿，這是因?yàn)閹谋壬笤谠撓匆褐杏袝r(shí)會(huì)局部發(fā)熱，致使比色皿膠接面裂開而損壞。同時(shí)經(jīng)洗液洗滌后的比色皿還很可能殘存微量鉻，其在紫外區(qū)有吸收，因此會(huì)影響鉻及其他有關(guān)元素的測(cè)定。 </p> <p> 一般主張使用硝酸和過(guò)氧化氫(5：1)的混合溶液泡洗，然后用水沖洗干凈。對(duì)一般方法難以洗凈的比色皿，還可以采取以下兩種方法。 </p> <p> 2.2先將比色皿侵入含有少量陰離子表面活性劑的碳酸鈉(20克/升)溶液泡洗，經(jīng)水沖洗后，再于過(guò)氧化氫和硝酸(5：1)混合溶液中侵泡半小時(shí)。可靠紫外可見分光光度計(jì)排名紫外-可見分光光度法是利用某些物質(zhì)的分子吸收200--800nm光譜區(qū)的輻射來(lái)進(jìn)行分析測(cè)定的方法。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高效紫外可見分光光度計(jì)賣價(jià),紫外可見分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592155319523/9592810.png"></div><p style="text-indent:25px">紫外可見分光光度計(jì)的展望紫外可見分光光度計(jì)雖然是一類有著很長(zhǎng)歷史的分析儀器，但每一次吸收了新的技術(shù)成果都使它煥發(fā)出新的活力。掃描光柵型分光光度計(jì)依托成熟的設(shè)計(jì)制造工藝，并結(jié)合計(jì)算機(jī)控制等新的技術(shù)成果，仍有很強(qiáng)的生命力。在很多方面，掃描型產(chǎn)品仍體現(xiàn)了技術(shù)水平。陣列式探測(cè)器的產(chǎn)生直接促成了固定光柵分光光度計(jì)的設(shè)計(jì)，使得它在測(cè)量地更快、更穩(wěn)定、適應(yīng)性更強(qiáng)的方向邁出了一大步。并且，從今后的發(fā)展來(lái)看，儀器的小型化、在線化，測(cè)量的現(xiàn)場(chǎng)化、實(shí)時(shí)化將是一大方向。要使分光光度計(jì)走出實(shí)驗(yàn)室，成為一種應(yīng)用更廣，更為普及的測(cè)量分析設(shè)備，陣列式探測(cè)器以及其它的固態(tài)式設(shè)計(jì)可發(fā)揮重要的作用。光纖也將是其中的一項(xiàng)重要技術(shù)，它已使得紫外可見分光光度計(jì)的使用變得更方便，同時(shí)也使分光光度計(jì)的配置變得更靈活。光纖結(jié)合模塊化設(shè)計(jì)，可能使得分光光度計(jì)可以突破完全固定、靜態(tài)的組成，而變成可以自由搭配，自助式構(gòu)建的儀器。光纖同時(shí)也是實(shí)現(xiàn)在線測(cè)量的重要手段。計(jì)算機(jī)技術(shù)的影響將更為增進(jìn)。分光光度計(jì)的自動(dòng)化、智能化是一個(gè)方面。另一方面，軟件已經(jīng)在一定程度上使實(shí)在的儀器接近了虛擬的程序，網(wǎng)絡(luò)和信息技術(shù)的結(jié)合可能帶來(lái)進(jìn)一步的影響。</p><p> 紫外-可見分光光度計(jì)（UV）引用新型技術(shù)，其功能強(qiáng)大，采用單色器技術(shù)，波長(zhǎng)范圍190-1100nm，是各種涉及水和廢水分析領(lǐng)域的通用儀器，應(yīng)用范圍包括市政和工業(yè)廢水，飲用水，加工過(guò)程用水，地表水，冷卻水和鍋爐補(bǔ)給水等。 </p> <p> 在水和廢水監(jiān)測(cè)中的應(yīng)用，對(duì)于一個(gè)水系的監(jiān)測(cè)分析和綜合評(píng)價(jià)，一般包括水相（溶液本身）、固相（懸浮物、底質(zhì)）、生物相（水生生物）。在水質(zhì)的常規(guī)監(jiān)測(cè)中，紫外可見分光光度法占有較大的比重。由于水和廢水的成分復(fù)雜多變，待測(cè)物的濃度和干擾物的濃度差別很大，在具體分析時(shí)必須選擇好分析方法。 </p> <p> 在農(nóng)產(chǎn)品和食品分析中可用于檢測(cè)的組分或成分有蛋白質(zhì)、賴氨酸、葡萄糖、維生素C、硝酸鹽、亞硝酸鹽、砷、汞等; </p> <p> 在植物生化分析中可用于檢測(cè)葉綠素、全氮和酶的活力等； </p> <p> 在飼料分析中可用于檢測(cè)煙酸、棉酚、磷化氫和甲酯等。原理紫外可見吸收光譜主要產(chǎn)生于分子價(jià)電子在能級(jí)間的躍遷。利用一定頻率的紫外--可見光照射被分析的物質(zhì)，引起分子中價(jià)電子的躍遷，它將有選擇地被吸收。吸收光譜可以反映出物質(zhì)的特征。它對(duì)物質(zhì)進(jìn)行定性分析、定量分析及結(jié)構(gòu)分析,所依據(jù)的光譜是分子或離子吸收入射光中特定波長(zhǎng)的光而產(chǎn)生的吸收光譜。現(xiàn)在的許多紫外分光光度計(jì)裝的是“長(zhǎng)壽”型燈源，據(jù)說(shuō)氘燈可達(dá)2000小時(shí)，鎢燈3000小時(shí)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高效紫外可見分光光度計(jì)賣價(jià),紫外可見分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593139440396/4585287.png"></div><p> 當(dāng)你什么都不了解的情況下，只選貴的，準(zhǔn)沒(méi)錯(cuò)。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(jià)格較貴，如果過(guò)度放寬儀器預(yù)算，而追加經(jīng)費(fèi)采購(gòu)不需要的配件也是一種浪費(fèi)。如何快速簡(jiǎn)單的掌握紫外可見分光光度計(jì)的特性，從而進(jìn)行合適的采購(gòu)定位，小編將所需要的知識(shí)點(diǎn)總結(jié)如下。 </p> <p> 認(rèn)識(shí)紫外可見光分光光度計(jì)使用范圍。任何一臺(tái)儀器都不是解決所有問(wèn)題的同一把鑰匙。多問(wèn)自己幾個(gè)問(wèn)題：需要一臺(tái)什么樣的儀器，要用它來(lái)做什么，分析的樣品的形態(tài)、所需要的測(cè)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(lái)了。 </p> <p> 紫外可見光分光光度計(jì)作為一種常規(guī)的實(shí)驗(yàn)室分析儀器，可以常用于無(wú)機(jī)物、有機(jī)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。分光光度法可以得出一些化學(xué)反應(yīng)速度常數(shù)，并從兩個(gè)或兩個(gè)以上溫度條件下得到的速度數(shù)據(jù)，得出反應(yīng)活化能。材料紫外可見分光光度計(jì)現(xiàn)貨</p><p style="text-indent:25px">紫外可見分光光度計(jì)基本工作原理和紅外光譜儀相似，利用一定頻率的紫外可見光照射被分析的有機(jī)物質(zhì)。高效紫外可見分光光度計(jì)賣價(jià)</p>紫外可見分光光度計(jì)使用中常見問(wèn)題解析 <p> 在一般分光光度計(jì)的使用說(shuō)明書上，要求儀器預(yù)熱時(shí)間約20分鐘；若是帶微處理器的分光光度計(jì)，開機(jī)后儀器自動(dòng)進(jìn)入自檢(初始化)狀態(tài)，約需1O分鐘左右。在分光光度計(jì)預(yù)熱這個(gè)環(huán)節(jié)上，很多使用者或多或少存在問(wèn)題，如開機(jī)只預(yù)熱電路系統(tǒng)(不調(diào)節(jié)波長(zhǎng)、打開吸收池暗箱蓋預(yù)熱等)或認(rèn)為初始化過(guò)程就是預(yù)熱等等。對(duì)帶微處理器有自檢功能的分光光度計(jì)，開機(jī)后儀器自檢(初始化)結(jié)束后，在測(cè)定窗口上，設(shè)置所需波長(zhǎng)值，用一個(gè)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(cè)定。 </p> <p> 對(duì)于紫外可見分光光度計(jì)，由于有雙光源(鎢燈與氘燈)，為了延長(zhǎng)燈的使用壽命，開機(jī)自檢完成后可以關(guān)掉測(cè)定時(shí)不用的光源燈。高效紫外可見分光光度計(jì)賣價(jià)</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(jì)，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)。公司從事儀器儀表多年，有著創(chuàng)新的設(shè)計(jì)、強(qiáng)大的技術(shù)，還有一批**的專業(yè)化的隊(duì)伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。儀電分析憑借創(chuàng)新的產(chǎn)品、專業(yè)的服務(wù)、眾多的成功案例積累起來(lái)的聲譽(yù)和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來(lái)源地址: 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