The so-called "six-look" means seeing whether the water is transparent, clear, colorless and free of foreign bodies visible to the naked eye; Second, whether the trademark indicates the name of the mineral water source and the approval number approved by the national (or provincial, municipal) level appraisal; Third, see if the trademark indicates the product name, net content, standard number, production date and shelf life. The national standard stipulates that the shelf life of bottled mineral water is one year and that of barreled mineral water is not less than three months; Fourth, whether the trademark indicates the factory name, address, telephone number, product bar code and product license number; Fifth, whether the trademark indicates the characteristic indexes of mineral water, such as lithium, strontium, zinc, bromide, iodide, selenium, metasilicic acid, etc., and the content range of qualified elements, pH value, content range of main cationic and anionic soluble total solids; Sixth, look at the container packaging. Whether the bottled water container packaging is colorless or light blue, the bottle shape is full, the surface is smooth, and there are no bubbles, impurities and stains. The barreled packaging container is generally sky blue, the bottle mouth is smooth and flat, the bottle body is transparent, and the inner and outer walls are smooth.
two checks are: first, check whether the mineral water bottle or barrel leaks, if it does not leak, it is a qualified product, and if it leaks, it is a unqualified product or a fake product; 2. Check whether the bottle cap and anti-theft ring are detached, and all detached products are unqualified or shoddy products.
At present, there are many families who drink barreled mineral water. In order to prevent secondary pollution, consumers are reminded to pay attention to the following points when drinking barreled mineral water for their own health: 1. The water dispenser must be placed in a cool and dark place, never in a direct sunlight place, so as not to breed green algae. If it is really difficult, you should also add a light-proof barrel cover to the bucket; 2. Open water should be drunk within 2 to 4 weeks in autumn and winter, and it is best to drink it within 7 to 1 days in spring and summer; 3. The water dispenser should not be electrified and heated for a long time, and it should be boiled repeatedly. The repeatedly boiled water is not suitable for drinking; 4. The used empty bucket should be placed in a clean place. Do not pour dirty water or throw dirt into it, which makes it difficult to clean and disinfect the mineral water plant; 5. The drinking fountain should be disinfected regularly, preferably once every six months.
tap water and mineral water are born with a large number of trace elements that nature endows the human body with? In the process of processing, pure water removes almost all trace elements and inorganic minerals that are beneficial and necessary to human body, and loses the nutritional function of water. Moreover, pure water has a strong ability to dissolve various trace elements, compounds and nutrients. After drinking in large quantities, some trace elements and nutrients in the body will be quickly dissolved in water and excreted. Therefore, experts suggest that you can drink a small amount of pure water, but you should not drink it all the year round, especially for children, teenagers, the elderly and pregnant women.
identification of bottled drinking water
bottled drinking water products include mineral water, purified water (including distilled water) and drinking water. Among them, mineral water and pure water are the main products in the market.
Mineral water mainly comes from deep underground, which is thousands or even tens of thousands of years ago. According to the current national standard for drinking natural mineral water in China, as mineral water, firstly, it should not contain substances harmful to human body or harmful to human health, and secondly, it must contain a certain amount of characteristic trace elements beneficial to human body, such as lithium, strontium, zinc, bromine, iodine, metasilicate, selenium and dissolved total solids, and at least one of them must reach the value specified in the national mineral water standard, otherwise it cannot be called mineral water. Due to the different geological structure and the age of rock formation, there are great differences in the amount and types of mineral substances contained in various mineral water. High-quality mineral water is usually low in sodium, moderate in mineral content and contains one or several characteristic trace elements. This mineral water is not only beneficial to health, but also has a good taste.
Pure water, including distilled water, is treated by various chemical and physical means to remove harmful substances in water, and at the same time, it also removes or greatly reduces the content of other minerals in water. The current national drinking pure water standard stipulates that its conductivity is less than or equal to 1 us/cm2, which represents the purity of pure water.
Problems that consumers should pay attention to when buying bottled drinking water:
1. It is recommended to buy brand-name products produced by large enterprises. Bottled drinking water has been included in the quality and safety market access management, and the products should be marked with QS.
2. Look at the product label: the qualified product label should clearly indicate its product name, net content, manufacturer's name, address, production date, shelf life, product standard number and other contents.
3. Identify the sensory quality of water: Qualified drinking water should be colorless, transparent, clear, odorless and odorless, with no visible objects. Yellow color, turbidity, flocculent precipitation or impurities, water with peculiar smell must not be drunk.
4. Once the bottled water is opened, it should be used up as soon as possible, especially in hot summer, when the temperature is high, the bacterial reproduction speed is also accelerated, and it can't be stored for a long time. It is best to put it in a dark, ventilated and cool place to avoid exposure to the sun.