| Customization: | Available |
|---|---|
| Display: | Digital |
| Appliance: | Water |
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1.1 Test Principle
In the presence of potassium iodide, ozone can react with DPD (N,N-diethyl -p-phenylenediamine) indicator to form a pink color, which is proportional to the ozone concentration.
1.2 Applied Range
The colorimeter can be used to measure the concentration of ozone in all kinds of water disinfected by ozone. The LCD display the concentration of ozone directly, the unit is mg/L.
1.3 Executive Standard: Q/HK 080315
1.4 Instrument Specification
l Test Range: 0~2.50 mg/L
l Light source: Light Emitting Diode(LED)
l Detection Wavelength : 525nm
l Reading accuracy: 0.01mg/L
l Detection precision: ≤ ±5%
l Power Source: 4×1.5V
l Battery Life: ≥ 40 working hours
l Size: 159×68×35mm
l Weight: About 220g(including batteries)
l Working Environment:0~40;Relative Humidity within 0~90% (No Condensed Water)
2.1 Calibration
In order to save time and cost of constructing a calibration curve for users, the Huankai pocket colorimeter has been calibrated before it leaves the factory.
Packing List:
1. A test mainframe;
2. Ozone reagent (100 tests);
3. 2 test tubes of 10 mL;
4. 4 batteries of 1.5V;
5. A instruction book;
6. A certificate of qualification;
7. Some lens paper;
8. A carrying case
Q1: When doing hardness testing of water samples ,why color keep unchanged after adding 100ml of water ?
A1: The hardness of the water sample may belong to low hardness,it out of testing range range of reagents, lower hardness reagent is recommended to be used.
Q2: When doing chlorine (or ozone, total chlorine) testing of for water samples,the longer time, the deeper the color, and why?
A2: Because the containing DPD reagent may react with the air oxidation, it is proposed in strict accordance with the test instructions, to control the reaction time.
Q3: Why the water sample shows pink after adding DPD chlorine (or total chlorine, ozone) reagent ,and then faded to become colorless?
A3: The reason may be that the concentration of chlorine (total chlorine, ozone) in the water is too high, dilution is recommended before testing.
Attentions
1.To insure the accuracy of test results, please use the same test tube when zero adjustment and sample analysis.
2. Let the tset tube stand for 30s before read the test result.(to wait for the disappearance of air bubble and the sedimentation of solid granule)
3. Inder to prolong the working life of batteries, please press and hold the power key to turn the pocket chromometer off.
4. If there is solid or liquid in cell holder, wipe it and then put test tube into the cell holder.
5. If the battery icon begins to twinkle, change the batteries first and then continue test.
6. Clean test tube and cap after test. If the test tube is contaminated, add detergent into the tube and then shake for 15s. The detergent is gotten by mixing the HCl (1+3) and ethanol at the ratio of 1:1. Please do not wash test tube with a brush! To keep clean, the test tube can be soaked in deionized water when it is not used.
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