In autumn and winter, the health of young people can't be separated from the days of boiling Lycium barbarum, which requires a safe and easy-to-use electric kettle.

In recent years, many consumers are worried about the rumors that heavy metals in electric kettles exceed the standard and high manganese steel electric kettles can cause amnesia. Facing the dazzling array of hot water kettles in the market, how to choose?

On October 20 19 10, Consumer Report and Liance Technology (Guangzhou) Co., Ltd. purchased Midea MK-HJ 1705, Kochi ZD 18A, Hemisphere NS-K730- 18, and Jiujiu, which were popular in the market. Royalstar JY20P Whirlpool WEK-MS 17BG, Philips HD93 16, Jinzao T- 190, Xiao Xiong ZDH-A15Y7 * *12 electric kettles are sent to a third-party authoritative testing institution for dissolution.

▲ 12 electric kettle

The results show that the safety of 12 electric kettle meets the national standard, and consumers can use it with confidence.

In addition, the nominal inner wall of all electric kettles is 304 stainless steel, and the test results are consistent with their nominal values, but the low nickel content has become an industry phenomenon, which may reduce the cost. Among them, Jiuyang and Rongshida have more metal migration, which is close to the lower limit of the standard. Chigo and Bear are eligible to step on the line!

In the metal migration test, Jiuyang and Rongshida have more metal migration; In the subjective experience, the shell temperature of Chigo and Bear is higher when cooking, so consumers should be careful not to touch them by mistake.

Metal migration: Jiuyang and Rongshida have high content.

During 20 16 1 quarter, Jiangsu Quality Supervision Bureau monitored the quality risk of electric kettles in the market. The results show that 55.6% of 45 batches of samples use high manganese steel, and the manganese content ranges from 9% ~ 10%.

In February, 20 16, Consumer Report sent for inspection six kinds of electric kettles that were popular in the market, and found that the nickel migration of Philips HD93 16 and Jiuyang K 15-F2, which were nominally made of 304 stainless steel, exceeded the standard.

Has the situation changed in the past three years?

According to the Food Contact Standard issued by People's Republic of China (PRC), stainless steel in contact with food, such as electric kettle, should comply with GB 4806.9-20 16 Metal Materials and Products for Food Contact, in which there are clear limit requirements for arsenic, cadmium, lead, chromium and nickel.

According to GB 4806.9-20 16 Metal Materials and Products in Contact with Food, the migration of five metals in 12 electric kettle was detected.

The results show that the detection of metal migration in 12 electric kettle meets the national standard.

Among them, Midea, Oaks and Chigo performed brilliantly, and were not detected under the experimental conditions of 4% acetic acid, boiling for 30 minutes and standing at room temperature for 24 hours.

Jiuyang and Rongshida, on the other hand, did not perform very well, with relatively more contents. The contents of chromium and nickel detected in Jiuyang were 0.0625 mg/kg, 0.0255 mg/kg, 0.0745 mg/kg and 0.027 mg/kg respectively.

Inner wall material: all 304 stainless steel, Chigo and Xiao Xiong are qualified to step on the line.

You must be familiar with the propaganda of 304 stainless steel, austenitic stainless steel, austenitic stainless steel and food-grade stainless steel about the inner wall material of electric kettle, which determines whether the electric kettle is rust-proof and corrosion-resistant.

304 stainless steel is also called austenite 304, which is correctly written as 06Cr 19Ni 10 in China, and is generally labeled as SUS304 or 304 in Japan and Europe and America. This kind of stainless steel has stable austenite structure, good corrosion resistance and processability, and is widely used in food industry.

304 stainless steel requires high content of nickel and chromium, which is the key to ensure that the steel does not rust. Generally, the higher the content, the higher the corrosion resistance of steel.

▲ The words "food grade 304" on the inner wall of the electric kettle.

So, is the 304 stainless steel claimed by the electric kettle really 304 stainless steel?

According to GB/T 20878-2007 "Brands and Chemical Compositions of Stainless Steel and Heat Resistant Steel", the metal content limits of 304 stainless steel (06Cr 19Ni 10) are as follows: Mn is 0~2%, Cr is 18~20%, and Ni is 8 ~.

The results show that the inner wall of 12 electric kettle is made of 304 stainless steel, which meets the national standard.

However, it is worth mentioning that the content of Ni (nickel) in 304 stainless steel used in 12 electric kettle is low, which is close to the lower limit of 8- 1 1% in the standard, about 8.00%~8.22%.

In particular, Kochi and Xiao Xiong have just reached the qualification line of 8.00%.

Why is it so coincidental that almost all electric kettles just meet or exceed the standard limit?

We know that nickel (Ni) and chromium (Cr) are relatively expensive. In order to save cost, stainless steel manufacturers of electric kettle may produce according to the lower limit of national standard to reduce the overall cost of raw materials, but the rust and corrosion resistance of 304 stainless steel manufactured in this way may be lacking.

Electrical safety: all meet the standards and can be used with confidence.

Some consumers use electric kettles casually and like to cook tea and food. Use an electric kettle, or let it dry by mistake. So when consumers do these operations, is the safety guaranteed?

We also tested the abnormal working condition of 12 electric kettle.

The results show that 12 electric kettle meets the standard requirements, and it will not cause danger under abnormal or misoperation conditions, so consumers can use it with confidence.

Subjective experience: Chigo and Bear are in danger of scalding.

We also made subjective tests on boiling time, noise, handle temperature, shell temperature and lid temperature.

The results show that Bear, Vortex and Jinzao boil water faster, all in a little more than 3 minutes. However, Hemisphere and Rongshida boil water slowly, about 4 minutes.

This paper compares the tests of six electric kettles in Consumer Report in 20 16, but the boiling time of the test is between 5-8 minutes. In the past three years, the boiling capacity of electric kettle has been greatly improved.

In terms of noise, 12 electric kettle has little difference, and the sound is about 70 decibels. Above 60 decibels, it belongs to the noisy range. When it is close to 70 decibels, we can think that it is very noisy and may have an impact on the auditory nerve. Royalstar, Hemisphere and Xiaomi have low noise when boiling water, while Jinzao, Supor and Kochi have high noise.

Shell, handle and lid are all parts that consumers may come into contact with when cooking. If the temperature is very high, there may be a danger of scalding. The results show that the handle temperature of 12 product is below 30℃, and consumers can rest assured.

However, in the temperature measurement of the shell, the temperature of Chigo and Bear is higher, so consumers should pay special attention.

Comprehensive evaluation of CCR: Philips and Supor are recommended, but Hemisphere and Royalstar are not recommended.

A comprehensive evaluation of 12 hot water kettle was made based on the indexes of metal migration, material nominal, electrical safety and subjective experience.

This magazine recommends Philips and Supor. Philips HD93 16 is balanced in four aspects. The use of 304 stainless steel is conscientious and safe, with excellent experience and no burns. Supor SW- 17D8 18 has higher cost performance and higher CCR score.

The Consumer Report suggests that:

1。 Consumers are advised to check whether the words GB 4806.9 or 304 are printed on the product packaging, kettle body and inner wall before buying.

2。 Consumers with specific heat preservation requirements (such as milk powder, coffee, tea, etc.) suggest choosing an electric kettle with heat preservation function.

3。 Be careful not to add water below the minimum boiling water line, otherwise it will dry easily; Do not exceed the highest boiling water line, or water may overflow or burn when boiling.

4。 Don't use the electric kettle to cook, make tea, etc. Because some temperature limiters of hot water kettles stop boiling water by sensing steam, if food blocks that hole, the kettle may not stop heating and cause damage.

5。 Pay attention to choose an electric kettle with a protective device at the spout, which is not easy to hurt children.

▲ Pay attention to buy an electric kettle with a protected spout.

[Special Statement]: The test results and brands mentioned in this report are only responsible for the test samples, and do not represent the quality status of products of the same batch or other models.

Source: Consumer Reports Magazine