Плавательный бассейн, спа, и питьевой воды тест комплект для тестирования полосками для детей 2 предмета (1600187501141)

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The logarithmic value of the reciprocal of the hydrogen ion activity in water. The World Health Organization does not yet have a health-based guideline value for pH. Of course, the closer the pH of water is to blood pH, that is, 7.35 to 7.45, the best.However, in human evolution, from drinking natural water, well water to tap water in the past 100 years, the pH is between 6.5-8.5. Therefore, as long as it is within this range, the human body has strong pH buffering and adjustment capabilities. Standard pH 6.5-8.5.

hardness mainly refers to the content of calcium and magnesium ions in the water. Hardness is divided into carbonate hardness and non-carbonate hardness. Carbonate hardness is mainly formed by calcium and magnesium bicarbonate, and it can also contain a small amount of carbonate, which can be precipitated and removed by heating and boiling, which is also called temporary hardness. After we usually boil water, the white precipitate in the container is this type of carbonate. Non-carbonate hardness is formed by calcium and magnesium sulfates or chlorides and cannot be removed by heating and boiling. It is also called permanent hardness.The sum of carbonate hardness and non-carbonate hardness is called total hardness. The calcium and magnesium ions in the water
only come from the dissolution of calcium and magnesium salts in the soil and rocks. When the water contains more carbon dioxide, it can promote the dissolution of calcium and magnesium. The hardness of source water varies greatly from place to place, the lowest can be several milligrams per liter, and the highest can reach several thousand milligrams. It is generally believed that the hardness of water plays a good role in maintaining the body's calcium and magnesium balance. But too high hardness also has an adverse effect on the body: after people are used to drinking soft water, they switch to water with too high hardness, and gastrointestinal dysfunction may occur at the beginning, affecting digestion and absorption. But generally it can adapt in a short time. In hard water cooking, calcium and magnesium are combined with protein, making meat and beans difficult to boil, and affecting digestion and absorption. Too high hardness not only consumes soap, produces scale, corrodes container equipment, but also affects the taste of water and even gastrointestinal function. The standard limit is 450 mg/L.


Water test system
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Class II
2 Year
After-sale Service
Online technical support
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Water test strips pH
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Company Profile

Established in Year 2014,CHANGCHUN ZYF SCIENCE AND TECHNOLOGY Co., Ltd. is a high-tech enterprise devoted to the R&D, manufacturing, and sales of high-quality diagnostic products including laboratory equipment and clinical diagnostic reagents.

We can offer more than 30 kinds of urine analysis strips sold well and enjoyed high reputation from both domestic and overseas markets. Based on the principle of "customer first, quality first", our products continue to cover world-wide markets with the advantages of stable performance and high accuracy.

We registered MR International Healthcare Technology Co., Ltd. in Hong Kong for overseas sales. Through MR, we also possess some manufacture facilities in Zhejiang, Guangdong and Jiangsu provinces of China in order to help reduce the cost while caring about the quality.

We are committed to provide most reliable medical devices and solutions to people in every corner of the earth. Accomplishing the mission of "maximizing the reliability of medical products" is our goal. We do care about obtaining the trust from our partners and patients. We are dedicated to innovation in the fields of Rapid Test, POCT, In-Vitro Diagnostics, and Medical Consumables, such as vacuum tubes, tube holders, etc.

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