The figure shows the ceramic bowl of this test. Han Yu photo
Zhongxin Net Chongqing May 7th (Reporter Han Wei) How to choose the “rice bowl” in every day? On the 7th, the Chongqing Municipal Consumer Council issued a comparison test results of ceramic tableware. This test sample has collected 13 red leaves, Jiayu, Minyang, Guanfu, Yachend, Jiadener, Anvina, porcelain dish, and Japan’s 13 ceramic tableware, etc., covering the domestic The main place of ceramic tableware. Samples (except for soil bowls and birthplace) the highest price of 39.8 yuan, the lowest of 2.9 yuan, of which 7 below 10 yuan, and 6 more than 10 yuan.
According to reports, the sample of this comparative trial is purchased by the Chongqing Municipal Consumer Council with ordinary consumers in the main supermarkets, farmers markets, and Taobao flagship stores in the main city of Chongqing. Shoubu is customized by the staff as ordinary consumer. Cracks and gappers are collected from consumer home.
There is no abnormality outside the anti-air shock resistance
Anti-heat transmission is to indicate that the ceramic product resists the excessive temperature and does not change the characteristic indicators of crack or no damage. The test method is to heat 5 samples to 180 ° C and holding for 30 minutes, put it in a 20 ° C flowing water tank 10 Minutes, see if the surface is cracking. The samples involved in this comparative trial were only three cracks in the life bowl, and there were no abnormalities in other samples.
How is the microwave effect?
This test mainly indicates whether the product is suitable for the characteristic indicators used in the microwave, ovens.
Since the daily ceramic products have a certain water absorption, the product billet will inhale some moisture during use, in the microwave, the gasification of the water can cause cracking or damage to the product during the use of the oven. Extremely individual products may be too fast due to moisture, water vapor cannot wait for the product’s ubiquitial, resulting in frying in microwave, oven. All samples have been tested to meet the standard requirements.
The water absorption is within the scope of reasonable value except for soil
The water absorption is an important indicator of the density of the food ceramic container product. Ceramic products have certain adsorption permeability for water, and ceramic containers having excessive water absorption after adsorbing water, the glaze surfaces thereof may cause cracking due to excessive expansion. At the same time, its anti-pollution ability is also weak. When there is a colorful food, it is easy to adsorb the surface of the product and it is difficult to clean. The dirt and odor in the water are easily supplemented into ceramics. After use, it will produce an odor that cannot be removed. This is not only harms the health of consumers, but also causing certain damage to the appearance of the product.
Testing, there were 4 groups of various brands of water samples in this comparative trial, 5 groups of 0.5% to 0.6%, 5 groups above 0.6%, of which the highest was 0.69%. The soil excise rate is 2.66% because of the surfaceless suction rate, and it is always within the reasonable value.
Heavy metal mobility is within security
Many people are concerned about the weight of the ceramic heavy metal, and this comparative trial also has been tested.
The results show that there is no significant difference in imported ceramic tableware and domestic brand ceramics, which can be used with confidence. Among them, Tangshan Jiayu’s ceramic bowl is excellent in heavy metal precipitation, and the weight of heavy metal elements in various food simulation is below the lowest. The detection limit.
Xu Jing, secretary general of the Chongqing Municipal Consumers Committee, said that ceramic tableware has a certain amount of heavy metal precipitation, and consumers don’t have to panic during use, and extremely trace of heavy metal human body can be normal metabolism. Consumers who are unassured can be soaked with acetic acid (vinegar), soy sauce, etc. before use, and accelerate the precipitation of heavy metals in the tableware.
Gaps and crackpers detected coliforms and Salmonella
Many frugal home bowls have cracks will continue to use, and the test has been tested against the gap and crack bowl.
The test method is to first test the same food with the test tableware, and place it to the same room temperature 24 hours, 24 hours after simulating the home washing mode for cleaning, then test the microorganism according to standard.
Test results, a set of brand bowls in the sample and a set of life bowls sampled the coliform group, while all crack bowls and gappers were detected, and there were even a set of samples to detect Salmonella.
Xu Jing reminded that it should be discarded in time when the gap or crack occurs. “First, it is easy to suddenly crackish or cut in the use process, and the second is that the gaps and cracks are easier to leave food residue, breeding microorganisms, and harm human health.” Xu Jing said.
Pay attention to these points when purchasing and use
When you choose ceramic tableware, try not to use the glaze or decorated, especially the inner wall of the ceramic tableware. It should be chosen to have a small or glaze that is small or glaze, generally do not choose a very bright décor. It is easy to use visual and hand touch to the glaze, and the screen is not as bright as the glaze, and the hand is not smooth and even the edge of the picture has a prudent purchase. It is also recommended that the ceramic tableware manufacturer will minimize the painting of the inner wall when producing bowls, reducing the risk of heavy metals to the food.
Buy a ceramic tableware, first use the vinegar to add 10 times water soaked for 2-3 hours and boil, which can precally toxic metals, reduce the potential harm of the ceramic tableware to the human body.
Given that the ceramic tableware is flush, the longer the temperature of the liquid, the higher the temperature, the easier to dissolve heavy metal materials, and do not advocate long-term ceramic tableware to store acidic foods and juice, wine, coffee and other beverages.
The customs in the Chongqing area have the traditional, life-friendly bodies that will give birthdays to the guest relatives and friends in the banquet of the elderly. It is also recommended to use it with confidence, but it is also recommended that you will not increase in the bowl when making birthshows. Fraglets and texts avoid unnecessary potential hazards.