Hand sanitizer, ＂ordinary＂ is good. antibacterial hand gel does not recommend long-term use.

　　In the evaluation process, anhydrous ethanol was added, dissolved and filtered.

　　The quality inspector is measuring the content of sodium chloride, waiting for the solution to change color.

　　"37℃ Evaluation and Quality Count" is an authoritative evaluation column jointly launched by Guangzhou Daily Life Service Department and Guangzhou Institute of Quality Supervision and Inspection, to answer questions about the quality confusion you encounter in the process of using products. Keep updating, so stay tuned.

　　Among the key words in 2020, "hand washing" must occupy a place. According to the data of an e-commerce platform, since January this year, the sales growth scale of hand sanitizer is about 10 times that of the previous year. At the same time, various hand sanitizers are emerging in the market, such as antibacterial hand sanitizer, antibacterial hand gel … … Is it better to wear antibacterial words than ordinary hand sanitizer? Antibacterial hand gel is so convenient, can it replace hand washing? With this series of questions, this newspaper and Guangzhou Institute of Quality Supervision and Inspection jointly launched this evaluation.

　　Your hand sanitizer, is it Xiao or Zhuang?

　　For most people, it has become a normal life to put an ordinary hand sanitizer at home and a antibacterial hand gel in your handbag when you go out, and convenience seems to be the biggest difference between them. Is that really the case?

　　According to reports, the main function of ordinary hand sanitizer is decontamination and cleaning, and there is another kind of hand sanitizer which has certain sterilization and bacteriostasis besides decontamination and cleaning. antibacterial hand gel with ethanol as the main active ingredient belongs to this category. At the time of purchase, the hand sanitizer with "Wei Xiao Zheng Zi" on the product belongs to disinfection products, and its main functions can include sterilization and bacteriostasis. Products with the word "makeup" belong to the category of ordinary cosmetics, and their functions are mainly cleaning. Therefore, the most direct way to prevent irregular enterprises from mislabeling is to check whether it is cosmetic or deletion.

　　In this test, all-media reporters randomly bought ordinary hand sanitizer and antibacterial hand gel from the supermarket. The total effective substance items and stability items of ordinary hand sanitizer are tested according to GB/T 34855-2017 Hand sanitizer, and the alcohol content items and stability items of antibacterial hand gel are tested according to GB/T 26373-2010 Hygienic Standard for Alcohol Disinfectants.

　　Interpretation of evaluation data

　　Which one to buy? Look at "active ingredients"

　　First of all, look at the test results of effective components, which is the most important basis for influencing the selection.

　　The active ingredient of ordinary hand sanitizer is surfactant. According to GB/T 34855-2017 Hand sanitizer, the total effective content is more than or equal to 7%, which meets the standard requirements. The report shows that the total effective content of this ordinary hand sanitizer is 11.0%, and the test result is "qualified". The active ingredient in antibacterial hand gel is ethanol. According to GB/T 26373-2010 Hygienic Standard for Ethanol Disinfectants, the ethanol content is between 70% and 80% (volume fraction), which meets the standard requirements. The report shows that the ethanol content of this antibacterial hand gel is 75.2% (volume fraction), and the test result is "qualified".

　　Interpretation:

　　The surfactant of ordinary hand sanitizer is mainly used for hand cleaning. Through the action of surfactant and mechanical friction, it cooperates with water flow to remove stains on hands. The active ingredient of antibacterial hand gel is ethanol (commonly known as alcohol), which is mainly used for hand disinfection. Different active ingredients have different cleaning effects.

　　Buy or not? Look at "stability"

　　The stability index of ordinary hand sanitizer has a certain influence on its shelf life and is an important criterion to judge whether the product is "compliant". Do a comparative observation within 24 hours. After returning to room temperature, there is no delamination, precipitation, odor and discoloration, and the transparent product is not turbid, which reaches the standard.

　　The stability index of antibacterial hand gel plays a decisive role in the shelf life. After being stored at 37℃ for 90 days, the decline rate of the content of bactericidal active ingredients is less than or equal to 10%, and the storage period can be set as 2 years.

　　Interpretation:

　　The "stability" index of hand sanitizer is an important basis for understanding whether the product quality is "excellent".

　　Expert:

　　Antibacterial hand gel does not recommend long-term use.

　　So, which hand sanitizer is better to choose in daily life? Let’s listen to the advice of Li Yongjin, a senior engineer in the Chemical Inspection Department of Guangzhou Institute of Quality Supervision and Inspection.

　　Can antibacterial hand gel replace ordinary hand sanitizer?

　　Li Yongjin said that antibacterial hand gel is indeed more convenient when going out and washing water is inconvenient, but when conditions permit, ordinary hand sanitizer is generally recommended. He pointed out that "there are microorganisms in the environment. In the life of ordinary people (non-medical personnel), the use of ordinary hand sanitizer has been able to meet the usual decontamination needs. The active ingredient of most antibacterial hand gel is ethanol, which is mainly used for hand disinfection. Excessive use may stimulate the skin barrier and damage it. " Of course, in the special background of the epidemic, in addition to ordinary hand sanitizer, a bottle of antibacterial hand gel should also be kept on hand for disinfection and sterilization.

　　However, Li Yongjin specially reminded that when using antibacterial hand gel, special attention should be paid to the risks of storage and use caused by high ethanol content, attention should be paid to staying away from fire sources, not spraying disinfection on clothes, etc. At the same time, in order to ensure its bactericidal effect, it should also be noted that it should not be diluted before use.

　　Is it necessary to use hand sanitizer for children?

　　Li Yongjin pointed out that children’s hand sanitizers are generally ordinary hand sanitizers and belong to cosmetics. The Technical Specification for Cosmetic Safety (2015 edition) and the Guidelines for the Application and Evaluation of Children’s Cosmetics have relevant requirements for children’s cosmetics to ensure the safety of products. Therefore, he suggested, "When buying hand sanitizer for children, it is still recommended to choose the label ‘ Children ’ Products. "