ET1151M化学需氧量(COD)总磷总氮测定�?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>原理及用途：</strong></p><p> ET1151M化学需氧量（COD）测定仪是一种由微处理器控制、LED光源滤光测定仪，适用于实验室或者现场的化学需氧量（COD）的测试过程。该仪器允许用户储存自建的标准曲线，也可以直接调用程序内部曲线。该仪器还具备总氮（TN）、总磷（TP）测定功能。可选用配套的预装试剂，极大限度简化了用户的测定工作� </p><p><strong>化学需氧量（COD）测量： </strong> 有机物被氧化，使 Cr6+ 变为 Cr3+，Cr6+显黄色，Cr3+显绿色，通过比色法可知氧化剂的消耗量� </p><p><strong>总氮（TN）测量： </strong> 水样中的氮被转化为硝酸盐后，在酸性条件下与变色酸生成黄色化合物，通过测量黄色光增强的程度来检测生成的黄色化合物的浓度. </p><p><strong>总磷（TP）测量：</strong></p><p> 水样中的磷被转化为正磷酸盐后，在酸性条件下与钼酸盐生成磷钼杂多酸，再被抗坏血酸还原，生成蓝色络合物，通过测量蓝色光增强的程度来检测生成的蓝色络合物的浓度� </p><p><strong>技术参数：</strong></p><p> 波长范围�?20nm�?10nm� </p><p> 波长精度：＋3nm� </p><p> 波长选择：自动； </p><p> 示值误差：�?％以内； </p><p> 重复性： �?％； </p><p> 稳定性：20分钟内吸光度值小�?.005A� </p><p> 读出模式：％T透过率、吸光度、浓度； </p><p> 光源灯： 发光二极管（LED）； </p><p> 波长420nm COD 测量范围�?�?50mg/L 精度�?.1 mg/L� </p><p> 波长610nm COD 测量范围�?�?500mg/L 精度�? mg/L� </p><p> 波长610nm COD 测量范围�?�?5000mg/L 精度�?0 mg/L� </p><p> 波长420nm 总氮（TN� 测量范围�?�?5mg/L 精度�?.1 mg/L� </p><p> 波长420nm 总氮（TN� 测量范围�?�?50mg/L 精度�?.1 mg/L� </p><p> 波长610nm 总磷（TP� 测量范围�?.05�?mg/L 精度�?.01 mg/L� </p><p> 波长610nm 总磷（TP� 测量范围�?.02�?mg/L 精度�?.1 mg/L� </p><p> 波长610nm 总磷（TP� 测量范围�?�?0mg/L 精度�? mg/L � </p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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