Check for lead-contaminated porcelain with vinegar and water

Lead in ceramics penetrates into food and drinks and enters the body, affecting the nervous system, blood, causing severe poisoning, even death.

There are many different kinds of porcelain with origin, quality, different models sold on the market. Many people wonder if it is good to buy which kind, or whether the porcelain used by them is safe enough or not.

Typically, porcelain and ceramics contain substances such as lead, cadmium . in decorative enamel or patterns. These substances, when contaminated, are absorbed into food and put into the body through food, drink, etc., accumulating in the body, affecting the nervous system, blood, causing severe and even poisoning. death.

Need to know how to carefully select and inspect ceramic products. (Photo: tuvanxaydung)

Moreover, in the process of use, low-quality porcelain and containing toxic substances are exposed to acidic and alkaline environments. In high temperatures, surface atoms tend to separate and blend into food and water. The higher the heat, the more activated the lead is separated .

Engineer Pham Van Lam - Institute of Chemistry gave some advice as well as how to test porcelain with water and vinegar, helping consumers to self-check to see if porcelain in the family is safe and secure. quality, as well as knowing how to use safe porcelain.

Accordingly, it is necessary to check the calcination and toxic heavy metal content of ceramic dishes by soaking the dishes in the vinegar solution. If the bowl has white markings or discolored vinegar, it should not be used.

Check with water , pour some water into the unglazed place of the bowl, cup and plate (probably the base). If you see that the bowl, plate or cup absorbs water quickly, the bowl of bone does not have enough heat. For all kinds of hand-crafted ceramics, if baked at low temperatures, lead poisoning can be caused to users. Because usually, the ceramic must be fired at temperatures from 1,200 to 1,500 degrees C. But if adding lead only need to burn at 800-1.100 degrees C has a lot of finished products.

That is the reason why the manual firing products are cheaper and the process is not standard, even cut down to save time, the cost should be more toxic. These toxic products stop getting lead higher if they contain hot, sour, fruit juice . because at high temperatures, acidic, alkaline salt will lead to quick release, contamination of food and cause toxic to the body.

If the bowl does not suck water is good bowl.

Note, no salt melon in glazed ceramic vase. Do not store food in glazed ceramic containers without knowing what kind of enamel is. Avoid daily use of lead crystal crystals.

Pregnant women should avoid daily use of hot drinks in ceramic cups. Do not use dishes when the enamel gets worn quickly.