In order to verify the truth of the statement that "all copper faucets are lead-free, all stainless steel faucets are lead-free", the truth team of CCTV "Is it true" went to the market to extract 14 faucets of different brands and sent them to Beijing Hardware Plumbing Product Quality Supervision and Inspection Center for testing. 14 brands are Le Jia and Kohler; Plummer and Supor; Huida, Jiumu, Oupai, Zhongyu, Bei Le, Jinlang; Wholesale brands in building materials market are Ant King, Xingfeng, Guangxin and Wulin.
According to Zhao Gang, director of the plumbing and bathroom inspection department of the National Building Materials Hardware Plumbing Inspection Center, this inspection was conducted in strict accordance with the national jc/t 1043-2007 "Lead Release Limit of Water Nozzles". According to the standard, the limit value of lead precipitation from the water nozzle is 1 1 μ g/L, and it is unqualified if it exceeds it. The results show that 14 faucets all contain lead, and the lead precipitation from 12 faucets in Le Jia and Jiumu is less than the national limit value 1 1 μ g/L, which meets the national standards. Only the lead precipitation from the sample faucets of Xingfeng Sanitary Ware and Wulin Sanitary Ware exceeded the national standard.
The precipitation of hexavalent chromium in Supor stainless steel faucet exceeds 50% of American standard.
"Is it true?" also confirmed that the faucet contains a variety of heavy metals such as zinc, manganese, chromium and nickel in addition to lead. Although the current national standards do not include the precipitation amount of these heavy metals in the specified range, as early as 1988, the nsf 61standard proposed by NSF of national sanitation foundation made clear requirements for the precipitation amount of various heavy metals. 13 products all meet the American standard, and only Supor sample faucet has a hexavalent chromium content of 3.028ug/l, which exceeds the American standard (? 2.0 μ g/L).
Excessive chromium can easily lead to kidney/liver failure.
According to experts, hexavalent chromium is easily absorbed by the human body and can invade the human body through digestion, respiratory tract, skin and mucosa. Hexavalent chromium compounds can cause cancer in the body and many other health problems. Excessive intake of chromium can lead to kidney and liver damage, nausea, gastrointestinal irritation, gastric ulcer, spasm and even death.
Excessive (more than 10ppm) hexavalent chromium is fatal to aquatic organisms. Experiments show that hexavalent chromium in polluted drinking water can cause cancer. Hexavalent chromium compounds are often used in electroplating, tanning and so on. After animals drink water containing hexavalent chromium, hexavalent chromium will be absorbed by cells of many tissues and organs in the body.
In "Is it true?" Sun, deputy director of the Poisoning Treatment Department of the 307 Hospital of the People's Liberation Army, pointed out that long-term exposure to any kind of heavy metal will cause harm to human body, and excessive exposure to hexavalent chromium will cause renal function and liver failure.
The above is about Supor stainless steel faucet compiled by Bian Xiao. I believe that after reading it, everyone has an answer to whether Supor stainless steel faucet is safe. In fact, there are many similar products in life that claim to be safe and harmless, but this is not the case. When buying products, you must do your homework carefully and have a good understanding. Don't blindly follow the crowd and buy on impulse, which not only wastes money, but also harms your health.
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