Water Quality Testing Guide

General Test Strip Usage (1-Second Dip)

1. Immerse all testing parts of the test strip into the water sample for 1 second and remove.
2. Do NOT shake excess water off. Hold the strip horizontally for 5 seconds.
3. Compare against the color chart and read immediately for accurate results.

General Test Strip Usage (2-Second Dip)

1. Immerse all testing parts of the test strip into the water sample for 2 seconds and remove.
2. Do NOT shake excess water off. Hold the strip horizontally for 15 seconds.
3. Compare against the color chart and read immediately.

General Test Strip Usage (30-Second Dip)

1. Take out a test strip and hold the bottom of the strip. Immerse the circular part of the test strip in the solution for 2 seconds, then take out the strip.
2. Hold the strip horizontally for 30 seconds and then shake off excess liquid.
3. Compare the circular part of the test strip with the color chart immediately to get an accurate result.

Sulfate Test Procedure

1. Dip the test strip with all test fields into the sample for 5 seconds.
2. Shake off excess liquid.
3. Wait 120 seconds.
4. Compare test field with the color scale.

Low Range Chlorine Test Procedure

1. Take out a test strip and hold the bottom of the strip. Swing the circular part of the test strip back and forth in the solution for 30 seconds, then take out the strip.
2. Shake off excess liquid.
3. Compare the circular part of the test strip with the color chart immediately to get an accurate result.

Bacteria Test Procedure

1. Wash your hands and dry them before testing.
2. Open the self-sealing bag and be careful not to touch within the bag.
3. Add water sample to the position between the two dotted lines.
4. Seal the bag and keep it flat, so that the water sample could wet the entire test paper.
5. Place the bag at room temperature (no lower than 20°C) for 48 hours to get the test result.

Nitrate Test Procedure (2-Second Dip, 60-Second Hold)

1. Immerse all the testing parts of the test strip into water for 2 seconds and take it out.
2. Do NOT shake excess water off, then hold the strip horizontally for 60 seconds.
3. Compare against the color chart and read immediately.

Ammonia Test Procedure

1. Pour the sample water into the test tube until the water level reaches the scale line.
2. Take out the test strip and slowly dip it up and down in the sample water 30 times (one dip takes about 1 second).
3. Compare against the color chart immediately to get accurate results.

Free Chlorine

Most sterilized drinking water contains chlorine in the range of 0.2-1 mg/L. Chlorine levels in drinking water can be up to 4 mg/L (mg/L or 4 parts per million).

Total Hardness

Total hardness refers to the amount of calcium and magnesium in water. Water hardness classification of the general standard is: 0 to 60 mg/L (mg/L) for soft water; 61 to 120 mg/L for medium hardness; 121 to 180 mg/L for hard water; More than 180 mg/L for super hard water. Hardness value should not be too high or too low.

pH

The World Health Organization's "Guidelines for Drinking Water Quality" do not specify the pH of drinking water. However, it is pointed out that low pH is corrosive, and high pH affects taste. In order to make chlorination more effective, pH ≤ 8 is appropriate. According to China's "Sanitary Standards for Drinking Water" (GB5749-2006), the pH of drinking water is 6.4-8.2.

Total Alkalinity

Total Alkalinity is a measure of the ability of water to deal with acids or hydrogen ions. The base in the water helps to keep the pH of the water stable. Strongly alkaline water has the taste of "soda water". Excess total alkali may result in dry skin, damage to water pipes, and other consequences.

Cyanuric Acid

Cyanuric acid is the general name of sodium dichloroisocyanurate and sodium trichloroisocyanurate. As an organic disinfectant, it will accumulate continuously in the process of disinfection of drinking water. Too little will be decomposed by sunlight, and too much will easily affect the disinfection effect.

Total Chlorine

Total chlorine refers to the mass fraction of compound CL in water, including free residual chlorine and combined residual chlorine. Mainly from drinking water containing chlorine disinfectant. High levels of chlorine in drinking water have been linked to bladder, colon, and rectal cancers. It can also affect babies, leading to fetal deformities and neurological abnormalities in the brain and spinal cord.

Chloride(Salt)

Suitable for many places such as swimming pools, spa water, hot tubs, aquariums, and more.

Low Range Nitrite

Low range nitrite, the detection range of 0-1ppm, its advantage is that the measurement accuracy is higher.

Sulfate

The product can be used in: boiler replenishment water, brewing industry, cement and concrete processing industry, chemical industry, cooling water, drinking water, electroplating industry, food and beverage industry, industrial wastewater treatment, leather industry, metal processing, dairy processing industry, and surface water and sea water and other industries of sulfate testing.

Low Range Chlorine

Low range chlorine, the detection range of 0-1ppm, its advantage is that the measurement accuracy is higher.

Bacteria

Bacteria is not a bacteriological classification, refers to a group of aerobic and facultative-anaerobic, at 37 degrees can decompose lactose, acid and gas production Gram-negative bacillus. The bacteria are mainly from human and warm-blooded animal feces, generally used as a pollution detection index.

Ammonia Nitrogen

The detection range of ammonia nitrogen is 0-6mg/L.

Lead

Lead mainly comes from the discharge of industrial sewage containing lead. The release of lead caused by the corrosion of urban tap water pipe network and the excessive lead of faucet itself, which is very harmful to the body. First of all, excessive lead will affect the blood system and cause liver and kidney damage. In serious cases, it will cause lifelong damage to the human nervous system, blood system, cardiovascular system, and skeletal system.

Iron

Iron is commonly found in all water. High levels of iron can be fatal, but iron levels in drinking water are usually too low to be dangerous. Iron concentrations in well and aquifer water typically range from 0.5 to 10 mg/L, and due to water treatment processes, iron concentrations in drinking water are usually less than 0.3 mg/L.

Copper

The recommended safe level of copper in drinking water is not more than 1.3mg/L, otherwise it may harm human health.

Nickel

Application scenario: Industrial wastewater.

Zinc

The range of zinc is 0-50mg/L.

Nitrate

The pollution of nitrate in drinking water has received more and more attention in recent years. Too high a concentration of nitrate in drinking water will induce some water bodies to produce some carcinogens of nitrosamines, which makes newborns susceptible to methemoglobinemia (also known as "blue baby syndrome").

EPA drinking water standards: Nitrate (NO3) should not exceed 10 mg/L.

Nitrite

The interaction of nitrite with hemoglobin will oxidize normal ferrous iron to ferric iron to form methemoglobin. Methemoglobin can inhibit the function of normal hemoglobin to carry and release oxygen, resulting in tissue hypoxia, especially the central nervous system is more sensitive to hypoxia.

EPA drinking water standards: Nitrite (NO2) should not exceed 1 mg/L.