HC-211型库仑滴定法COD速测�?参数-价格-中国粉体罐�/title>

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$(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <p><strong><span>执行标准９�/span></strong><strong></strong></p><p><span>GB11914-89 <</span><span>化学需氧量的测定重铬酸钾法></span></p><p><span>JJG975-2002 </span><span>化学需氧量（COD）测定仪</span></p><p><strong><span>工作原理</span></strong></p><p><span>加热样品，诱发水样中有机物与事先加入的已知数量高锰酸钾（重铬酸钾）之间的氧化还原反应，HC211型库仑滴定法COD测定仪通过电量滴定，测量残余的高锰酷�/span><span>钽�/span><span>（重铬酸钾）的数量。当开始测量加热后的样品时，试剂中的Fe<sup><span>+3</span></sup>离子通过电解被还原为Fe<sup><span>+2</span></sup>离子。Fe<sup><span>+2</span></sup>离子快速消耗过量的高锰酸钾（重铬酸钾）。当过量的高锰酸钾（重铬酸钾）完全被消耗后，溶液中的Fe<sup><span>+2</span></sup>离子迅速增加并被电极检测到即滴定到达终点。通过计量到滴定终点为止所消耗的电量（电�?#215;时间），测定过量高锰酸钾（重铬酸钾）的量，经计算后以mg/L为单位显示出COD值、�/span></p><p><strong><span>产品用逓�/span></strong></p><p><span>适用于地下水、地表水、生活污水、工业废水中化学需氧量(COD)的测定、�/span></p><p><strong><span>技术参�?/span></strong></p><p></p><p><strong><span>仪器特点</span></strong></p><p><span>1. 反应过程可视化：LCD液晶屏实时显示反应进程及电位变化：�/span></p><p><span>2. 滴定终点检测精确：采用电位差法�?次微分法）检测滴定终点；</span></p><p><span>3. 电极检测反应终点：检测不受样品颜色和颗粒物的影响：�/span></p><p><span>4. 测试速度快：酸式高锰酸钾法≤5分钟、重铬酸钾法�?0分钟：�/span></p><p><span>5. 数据存储和输出：数据自动储存，内置打印机时时打印：�/span></p><p><span>6. 仪器组装简便：模块化设计，复合式电极，组装简便； </span></p><p><span>7. 检测成本低：试剂用量少，节约检测成�?/span><span>、�/span></p><p><strong><span>产品资质</span></strong></p><p><strong><span></span></strong></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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