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<p>視頻：SUNDE尚德SN-DS手持式智能總粉塵儀操作示范視頻SN-DS系列手持式智能粉塵濃度分析儀，通過測(cè)試懸浮物對(duì)光的衰減曲線，經(jīng)控制程序處理直觀的顯示出被測(cè)懸浮物濃度，并采用散射原理對(duì)懸浮物進(jìn)行校準(zhǔn)。根據(jù)檢測(cè)環(huán)境的不同，配置不同的附件并調(diào)整控制程序，即可滿足高溫、間接測(cè)試等不同場(chǎng)所、不同用途的測(cè)試要求，適用于工礦企業(yè)勞動(dòng)部門防塵監(jiān)測(cè)、衛(wèi)生檢疫檢測(cè)、市政監(jiān)測(cè)、科學(xué)研究、臨時(shí)在線監(jiān)測(cè)等。本儀器的特點(diǎn)是免受懸浮物大小的干擾，儀器體積小、重量輕，攜帶方便，測(cè)量簡(jiǎn)便，快速準(zhǔn)確，數(shù)字...</p> </div> </li> <li> <div id="pfpxjn55" class="lyNyNew_time"><span>2017</span><p>2-14</p></div> <div id="pfpxjn55" class="lyNyNew_text"> <div id="pfpxjn55" class="lyNyNew_name"><a href="/Article-1110393.html">視頻：COD恒溫加熱器的設(shè)置：設(shè)置溫度和消解時(shí)間</a></div> <p>SUNDE/尚德COD恒溫加熱器的設(shè)置：設(shè)置溫度和消解時(shí)間SN-102A型COD恒溫加熱器是一種采用空氣冷凝代替水冷凝的加熱回流裝置。該儀器可以自動(dòng)完成恒溫計(jì)時(shí)時(shí)間，無需人工參與。溫度飄逸小，恒溫精度高。采用型PID溫控器，具有升溫速度快，溫度緩沖小，溫度恒定均勻等特點(diǎn)，操作簡(jiǎn)便，是一種實(shí)驗(yàn)手段儀器化的新產(chǎn)品。同現(xiàn)行的重鉻酸鉀法測(cè)定化學(xué)需氧量的回流裝置相比，具有體積小、節(jié)水、節(jié)電、恒溫性能好、操作簡(jiǎn)便等優(yōu)點(diǎn)。該儀器適用于加熱回流法測(cè)定水中的COD，所得數(shù)據(jù)與經(jīng)典方法*對(duì)應(yīng)，可...</p> </div> </li> <li> <div id="pfpxjn55" class="lyNyNew_time"><span>2017</span><p>2-13</p></div> <div id="pfpxjn55" class="lyNyNew_text"> <div id="pfpxjn55" class="lyNyNew_name"><a href="/Article-1109137.html">水質(zhì) 溶解氧的測(cè)定電化學(xué)探頭法</a></div> <p>水質(zhì)溶解氧的測(cè)定電化學(xué)探頭法1適用范圍本標(biāo)準(zhǔn)規(guī)定了測(cè)定水中溶解氧的電化學(xué)探頭法。本標(biāo)準(zhǔn)適用于地表水、地下水、生活污水、工業(yè)廢水和鹽水中溶解氧的測(cè)定。本標(biāo)準(zhǔn)可測(cè)定水中飽和百分率為0%～100%的溶解氧，還可測(cè)量高于100%（20mg/L）的過飽和溶解氧。2規(guī)范性引用文件本標(biāo)準(zhǔn)內(nèi)容引用了下列文件中的條款。凡是不注日期的引用文件，其有效版本適用于本標(biāo)準(zhǔn)。GB7489水質(zhì)溶解氧的測(cè)定碘量法ISO7888Waterquality—Determinationofelectricalcon...</p> </div> </li> <li> <div id="pfpxjn55" class="lyNyNew_time"><span>2017</span><p>2-13</p></div> <div id="pfpxjn55" class="lyNyNew_text"> <div id="pfpxjn55" class="lyNyNew_name"><a href="/Article-1109127.html">環(huán)境監(jiān)測(cè) 環(huán)境空氣總懸浮顆粒物測(cè)定重量法</a></div> <p>環(huán)境空氣總懸浮顆粒物的測(cè)定重量法(GB/T15432-1995)1主題內(nèi)容和適用范圍1．1主題內(nèi)容本標(biāo)準(zhǔn)規(guī)定了測(cè)定總懸浮顆粒物的重量法。1．2適用范圍本標(biāo)準(zhǔn)適合于用大流量或中流量總懸浮顆粒物采樣器(簡(jiǎn)稱采樣器)進(jìn)行空氣中總懸浮顆粒物的測(cè)定。方法的檢測(cè)限為0．001mg／m3?？倯腋☆w粒物含量過高或霧天采樣使濾膜阻力大于10kPa，本方法不適用。2原理通過具有一定切割特性的采樣器，以恒速抽取定量體積的空氣，空氣中粒徑小于100um的懸浮顆粒物，被截留在已恒重的濾膜上。根據(jù)采樣前...</p> </div> </li> <li> <div id="pfpxjn55" class="lyNyNew_time"><span>2017</span><p>2-11</p></div> <div id="pfpxjn55" class="lyNyNew_text"> <div id="pfpxjn55" class="lyNyNew_name"><a href="/Article-1108235.html">COD實(shí)驗(yàn)室檢測(cè)標(biāo)準(zhǔn)方法</a></div> <p>COD實(shí)驗(yàn)室檢測(cè)標(biāo)準(zhǔn)方法1、主題內(nèi)容與應(yīng)用范圍本標(biāo)準(zhǔn)規(guī)定了水中化學(xué)需氧量的測(cè)定方法。本標(biāo)準(zhǔn)適用于各種類型的含COD值大于30mg／L的水樣，對(duì)未經(jīng)稀釋的水樣的測(cè)定上限為700mg／L。本標(biāo)準(zhǔn)不適用于含氯化物濃度大于1000mg／L(稀釋后)的含鹽水。2、定義在一定條件下，經(jīng)重鉻酸鉀氧化處理時(shí)，水樣中的溶解性物質(zhì)和懸浮物所消耗的重鉻酸鹽相對(duì)應(yīng)的氧的質(zhì)量濃度。3、原理在水樣中加入已知量的重鉻酸鉀溶液，并在強(qiáng)酸介質(zhì)下以銀鹽作催化劑，經(jīng)沸騰回流后，以試亞鐵靈為指示劑，用硫酸亞鐵銨滴定...</p> </div> </li> <li> <div id="pfpxjn55" class="lyNyNew_time"><span>2017</span><p>2-10</p></div> <div id="pfpxjn55" class="lyNyNew_text"> <div id="pfpxjn55" class="lyNyNew_name"><a href="/Article-1108149.html">關(guān)于SN-102A COD恒溫加熱器的操作步驟及注意事項(xiàng)</a></div> <p>關(guān)于SN-102ACOD恒溫加熱器的操作步驟及注意事項(xiàng)做檢測(cè)之前，我們首先要了解一下，我們所要檢測(cè)的參數(shù)，它的含義是什么。COD是化學(xué)需氧量的簡(jiǎn)稱，是指在一定的條件下，氧化1L水樣中還原性物質(zhì)所消耗的氧化劑的量，用氧的mg/l的來表示，所以也是它也是反映水中受還原性物質(zhì)污染的程度。測(cè)量廢（污）水的化學(xué)需氧量，我國規(guī)定要用重鉻酸鉀法。那么我們就簡(jiǎn)單介紹怎么運(yùn)用SN-102ACOD恒溫加熱器來檢測(cè)水中COD的含量。一、安裝與使用：1.開箱后按附圖裝好試管架，檢查主機(jī)無異?，F(xiàn)象即可...</p> </div> </li> </ul> </div> <div class="pfpxjn55" id="fengye">共 342 條記錄，當(dāng)前 43 / 43 頁 <a href="/article-p1">首頁</a> <a href="/article-p42.html">上一頁</a> 下一頁末頁跳轉(zhuǎn)到第<input style="width:20px" class="p_input" type="text" name="custompage" id="custompage" onkeypress="return event.keyCode>=48&&event.keyCode<=57" onKeyDown="if(event.keyCode==13) {window.location='/article-p'+this.value; return false;}">頁 <input type="button" value="GO" style="width:40px;height:22px" onclick="window.location='/article-p'+document.getElementById('custompage').value;" /></div> </div> </div>   <div id="pfpxjn55" class="ly_foot"> <div id="pfpxjn55" class="ly_Ftmain"> <div 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