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Three-in-one water analysis skills
Based on many years of practical experience, we have updated and designed this water quality tester that is more suitable for the aquatic industry. According to the characteristics of current fishery management, we integrate ammonia nitrogen, nitrite, and hydrogen sulfide into one, and the performance of the instrument is more stable and accurate. Instrument structure Compact and easy to use.
First, the main technical indicators
Measurement accuracy ±5% (all);
Repeatability ±3% (all);
Operating temperature 0 ~ 40 °C;
Relative humidity ≤95%;
Weight 2Kg;
Dimensions 350×270×10(mm)
Second, the instrument work environment
1. When the instrument is used, it should be placed in a stable manner with relative humidity ≤80%.
2. Keep away from strong magnetic fields, electric fields, and high-frequency equipment as much as possible. Avoid direct sunlight on the instrument.
Third, the instrument acceptance 1, after unpacking the instrument, check the instrument for any significant transport damage. 2, according to random packing list inventory attachments. 3, open the switch to see if the display is normal. If abnormal, please contact our company after-sales service, 010-51663485.
Fourth, the instrument operation method:
Water sample preparation:
The four cuvettes are numbered 1, 2, 3, 4 on the matte side, and a tick mark is drawn 5 mm from the mouth. If the sample is turbid, filter or precipitate the sample for a while. Fill the four cuvettes to the mark.
Place the 1st cuvette aside.
Ammonia nitrogen sample preparation:
Add 2 drops of ammonia nitrogen reagent to the No. 2 cuvette, turn it back and forth several times by hand; raise the cuvette upright and face the eyes, add a drop of reagent No. 2 and observe that there is no white mist. Appears, if not continue to add three drops of reagent No. 2, after the addition of a total of four drops of reverse mixing to prevent one side from standby.
Nitrite preparation:
Add the No. 3 cuvette to the nitrous acid test powder (0.1 g), block it by hand and mix it. (Use a child to drink a straw, cut a sloping mouth, and shovel a legion of beans is enough)
Hydrogen Sulphide Preparation:
Add the No. 4 cell to the H 2 S 1 reagent and mix with 4 drops. Add 4 H 2 S reagents. Block only once and set aside.
The above treated water samples should be tested at 25 degrees or above in summer and stand for 5 minutes. If the temperature is low, hot water can be added to the cuvette after the reagents in autumn and winter, and the reaction is faster. It is better to measure the water within 10 minutes after adding the reagent. If the time is too long, the color will change and affect the test result.
Water sample test:
1. Turn on the machine; press the switch and the indicator light on the right side of the switch will be on.
2, ammonia nitrogen test: press the ammonia button again, ammonia nitrogen button above the indicator light, (such as nitrite and hydrogen sulfide indicator light, please press the corresponding switch to extinguish), the 2nd cuvette into the colorimetric tank, Cover it with a lid, read it and record it as A. Then put the No. 1 cell into the cell, cover it, read it and record it as B. Calculate the test result = (AB) ÷ 100. After the test is finished, press the ammonia nitrogen button and the ammonia nitrogen indicator will go out.
3, nitrite test: press the nitrite button, the indicator light above the nitrite button, (such as ammonia nitrogen and hydrogen sulfide indicator light, please press the corresponding switch to extinguish it), the number 3 cell into the ratio Color groove, cover and cover, read and record as A. Then put the No. 1 cell into the cell, cover the lid, read the book and record it as B; the test result is calculated as (AB) ÷ 1000. After the test is completed, press the nitrite button and the nitrite indicator The light goes out.
4, hydrogen sulfide test: press the hydrogen sulfide button, hydrogen sulfide button above the indicator light, (such as ammonia nitrogen and nitrite indicator light, please press the corresponding switch to extinguish), the 4th color cell into the colorimetric tank , And cover the lid, read it and record it as A. Put the No. 1 cell into the cell, cover it, read it, and record it as B. Calculate the test result = (AB) ÷ 1000. After the test is completed, press the H 2 S button to turn off the hydrogen sulfide lamp.
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