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class="prod_view_name_bt">產(chǎn)品名稱：</strong> <b><h1 style="font-size: inherit"><span id="ShoveWebControl_Text3">氨氮的測定納氏試劑法測量儀</span></h1></b> </div> <div class="gljo9fygc" id="xn_c_prodv_26_wrap" class="xn_c_prodv_26_wrap"> <div id="gljo9fygc" class="xn_c_prodv_26_name" style="line-height: 36px;"> <span id="gljo9fygc" class="xn_c_prodv_26_namewz"><span name="_prodv_26_namewz">產(chǎn)品型號：</span></span> <span id="gljo9fygc" class="xn_c_prodv_26_namemc"><span id="xn_c_prodv_26_Text1">JH-TN20S</span></span> </div> <div id="gljo9fygc" class="xn_c_prodv_26_name" style="line-height: 36px;"> <span id="gljo9fygc" class="xn_c_prodv_26_namewz"><span name="_prodv_26_namewz">產(chǎn)品時間：</span></span> <span id="gljo9fygc" class="xn_c_prodv_26_namemc"><span id="xn_c_prodv_26_Text1">2024-07-14</span></span> </div> </div> <div class="gljo9fygc" id="prod_view_ms" class="prod_view_ms"><span id="ShoveWebControl_Text7">氨氮的測定納氏試劑法測量儀：</br>JH-TN20S型便攜式氨氮測定儀采用納氏比色法測量水中的氨氮，該方法具有操作簡便、靈敏度高等特點。其原理是：以游離態(tài)的氨或銨離子等形式存在的氨氮與鈉氏試劑反應(yīng)生成黃棕色絡(luò)合物，該絡(luò)合物的色度與氨氮的含量成正比。</span></div> </div> <p></p> </dd> </dl> <div id="gljo9fygc" class="main_top3"><p>產(chǎn)品介紹</p></div> <div id="gljo9fygc" class="product1 pro_1"> <p><span style="font-size:16px"><span style="font-family:黑體"><strong>氨氮的測定納氏試劑法測量儀</strong>技術(shù)參數(shù)：</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">1、測量范圍：0.02-25mg/L（分為二個量程：0～5mg/L、5～25mg/L。超量程可稀釋后測定）<br />2、基本誤差： ±3%(F.S)<br />3、重復(fù)性：≤3%<br />6、外形尺寸：80mm×230mm×55mm<br />7、重量：500g<br />8、正常使用條件：<br />⑴ 環(huán)境溫度:5～40℃ ⑵ 相對濕度: ≤85%<br />⑶ 供電電源: 4節(jié)5#電池<br />⑷ 無顯著的振動及電磁干擾，避免陽光直射。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"> </span></span></p><h3><span style="font-size:16px"><span style="font-family:黑體"> </span></span></h3><p><br /><span style="font-size:16px"><span style="font-family:黑體"><img src="http://pmo81920b.pic35.websiteonline.cn/upload/9y6e.jpg" /></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>氨氮的測定納氏試劑法測量儀</strong>產(chǎn)品概述：</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><span style="color:rgb(90, 90, 90)">本儀器采用納氏比色法測量水中的氨氮，該方法具有操作簡便、靈敏度高等特點。其原理是：以游離態(tài)的氨或銨離子等形式存在的氨氮與鈉氏試劑反應(yīng)生成黃棕色絡(luò)合物，該絡(luò)合物的色度與氨氮的含量成正比。</span></span></span></p><h3><span style="font-size:16px"><span style="font-family:黑體"><strong>水樣干擾及消除</strong></span></span></h3><p><span style="font-size:16px"><span style="font-family:黑體"><span style="color:#000000">水樣中含有懸浮物、余氯、鈣鎂等金屬離子、硫化物和有機物時會產(chǎn)生干擾，含有此類物質(zhì)時要作適當(dāng)處理，以消除對測定的影響。</span></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><span style="color:#000000">若樣品中存在余氯，可加入適量的硫代硫酸鈉溶液去除，用淀粉-碘化鉀試紙檢驗余氯是否除盡。若水樣渾濁或有顏色時可用預(yù)蒸餾法或絮凝沉淀法處理。</span></span></span></p><h3><span style="font-size:16px"><span style="font-family:黑體"><strong>水樣的稀釋</strong></span></span></h3><p><span style="font-size:16px"><span style="font-family:黑體">對于清潔的樣品，可直接從中取10ml作為試份；對于含有懸浮物或色度深的樣品，在預(yù)處理后，再從中取10ml<span style="color:#000000">(或稀釋后取10ml)作</span>為試份。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">稀釋原則：應(yīng)將水樣在攪拌均勻時取樣稀釋，一般被取原水樣不少于10ml，如果稀釋倍數(shù)超過10倍則原水樣應(yīng)進(jìn)行逐次稀釋。</span></span></p><h3><span style="font-size:16px"><span style="font-family:黑體"><strong>儀器的性能參數(shù)</strong></span></span></h3><p><span style="font-size:16px"><span style="font-family:黑體">① 測定方法：納氏比色法； </span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">② 測定范圍：0.01mg/L～50mg/L(＞5 mg/L時分段測定，超量程可稀釋測量)；</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">③ 測量誤差：≤±5 %；</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">④ 選用比色皿：10mm。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><span 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