Lohand wholesale cheap water chlorine dioxide test kit
USD $8 - $14 /Box
Min.Order:1 Box
Hangzhou Lohand Biological Co., Ltd.
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Chlorine dioxide test kit
1. Specification
Name: Chlorine dioxide Test Kit
Model: LH2006
Type: Semi-quantitative test
Color reaction: none color - pink
Gradation: 0.05-0.1-0.2-0.3-0.5-0.8-1.4-2 mg/L (ClO2)
Packaging: 25units/box
Shelf life: at least 1 year
2. Feature
Quick and easy
Users can complete the analysis of the residual concentration of ClO2 in water independently without specialized training. Five minutes is enough to complete the analysis of one sample. small size and light weight, specially designed for on site testing.
Accurate and reliable
This method equals to the on-site testing of chlorine dioxide method (GB/T5750-2006). The chlorine dioxide in water samples reacts with N, N-diethyl-p-phenylene -diamine (DPD) to produce a kind of pink compound. 20% chlorine in chlorine dioxide converts into chlorite. The chromogenic reaction is proportional to the content of chlorine dioxide in water.
3. Operation
1. Fill the tube with testing liquid to 15mL.
2. Add four drops of ClO2 (I), Cap and shake to mix. Add one DPD NO.3 tablet immediately, Cap it and compare the color visually just after dissolved.
4. Put the colorimetric tube on the blank of the standard card, then lift the tube up to 1cm, observe the color in the tube from top to bottom, find out the same level on the standard card.
Note:
(1) If the alkalinity is more than 250mg/L, or the acidity is more than 150mg/L, the generating of the color will be restrained or the color will fade.
(2) The presence of bromine, chlorine, iodine, ozone, 1-chlonoamine, manganese, chromium, organic amines, peroxides and other oxidant will affect the result.
(3) The color will be stable for 5min.
4. Background of development
Chlorine dioxide (ClO2), which has been recognized as efficient, broad-spectrum and belong to the security of AⅠ-level, is a new type of disinfector widely used in drinking water disinfection, microbial control for food safety and other fields. In order to push the application of ClO2and meet the requirements of monitoring of environment, the research on test methods of the working concentration and the residual concentration of ClO2 is subject to attention increasingly.
Q1: Why choose us?
A: 1. We have our own factory with strong R&D center and QA team which can make sure your goods can be sent out on time and in superior quality.
2. We have experienced and dedicated core members to offer you professional and reliable before-sales and after-sales service.
3. We have purveyed customers with the lowest wholesale price.
Q2: How do you guarantee the quality?
A: One year's guarantee from date on B/L. Normally. If it's quality problem, we promise to return goods or funds.
Q3: Is OEM available?
A: Yes, all goods can be custom made by your requirements, including packing, LOGO print, etc.
Q4: Can we buy 1 pc for sample testing?
A: Yes, we are glad to send 1pc for quality testing if we have stock of the model you required.
Q5: How to deliver the goods for trial order or small order?
A : For small order, we prefer to choose international express, such as DHL, TNT, EMS which are faster and more convenient for customer. Also, we cooperate with an express agent that can give us a big discount for express fee which is much lower than that quoted by official. For the goods with detachable battery, the express fee can be lower down if the goods is sent out without battery.
Q6: What kind of payment your company accept?
A : T/T , WEST UNION , PAYPAL , ETC.
Q7: If we have not found the model from website, what should we do?
A: Please email us with description and picture of the product, we research and develop new model every month, and some of them maybe have not been uploaded in website immediately. But If this is a new products for us, we can develop it for you after get all detailed information about your product.