Portable handheld colorimeter LH-C01 can test residual chlorine ion concentration in the water.It can detect and analyse the sample very fast by only three steps:start,zeroing and reading with small capacity(only 220 with battery).
Method：DPD method，residual chlorine react with the DPD reagent，the color of the sample change to be red.
Operating conditions:0 to 40℃,0 to 90% relative humidity (noncondensing)
Life of battery：1×9V,more than 40h
shutdown：Press the “ON/OFF” button to shutdown the colorimeter after the test.
Using DPD chlorine testing tablets. The most basic method is to use DPD chlorine testing tablets. In fact, the two methods above are essentially a DPD method. DPD stands for diethyl-p-phenylene diamine, the chemical compound which reacts with chlorine and changes the color of the sample water. The manner of using DPD testing tablets is similar to the liquid solutions mentioned above. Get a sample tap water, mix in the tablet, and compare the color results on the test chart. What makes it a little more complicated is that there are four DPD tablet variants which test different variations of chlorines. DPD1 is intended for residual or free chlorine, DPD2 for monochloramine, DPD3 for combined chlorine, and DPD4 for total chlorine.
1.What about your after-sales services ?
We have 100% QC before shipment. If there are some unexpected problems happen, we hope to solve these problems with our customers through friendly ways as below:
1). If it’s quality problem, customers must provide photos or videos and other evidences to us for identify. After confirmation, we’ll send the new products to replace the damages in next order.
2). If it’s man-made damaged, customers should take full responsibility.
2.Are you trading company or manufacturer ?
We are factory.
3.How can I choose the suitable one?
Dear customer, please tell us your detailed requirements by mail or online, we will recommend the suitable one as your request.
4.What is your terms of payment ?
100% T/T in advance ,balance before shippment.
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