来源：潮新闻 天气冷了 保温杯却变身"定时炸弹" 心仪赠品却意外爆炸 双脚浅二度烫伤 近日，杭州的柯女士（化名）怎么也没想到，自己购买一定金额商品后，免费领取的赠品，竟把她送进 了医院。 故事要从几天前说起，柯女士像平时一样去超市采购，她突然发现自己常喝的某个酸奶品牌正在搞促销 活动：满一定金额就送个定制保温杯。 "那个保温杯蛮精致的，颜色也不错。"一番思索后，觉得划算的柯女士便果断下单，满载而归。 不少人都用上了 "养生搭子"保温杯 但没想到 2025年8月，黑龙江黑河一男子在保温杯内用热水泡清洗剂，密封杯盖后，保温杯突然爆炸，热水四处 飞喷，杯子甚至因冲击力过大而嵌入墙内。 等回家处理完事情后，柯女士猛然想起还没给新的保温杯消毒，于是她便按照以往习惯，往杯子里倒了 些沸水，然后拧紧杯盖后摇了摇。 谁知就在摇晃的瞬间，随着"砰"的一声巨响，保温杯盖子猛地弹开，杯身也随之炸开，其中滚烫的热水 喷涌而出，有一大半都浇在了柯女士的脚上。 "当时脚背上传来一阵钻心的疼，就像被火烤一样。"柯女士连忙脱掉袜子查看，发现双脚皮肤已发红， 吓得她赶紧前往西湖大学医学院附属杭州市第一人民医院就诊。 经检查，柯女士双脚布满大小 ...

Core Points - The article discusses the health risks associated with using certain types of thermos cups, particularly those made from non-food grade stainless steel materials [1][3] - It emphasizes the importance of selecting thermos cups made from safe materials, specifically 304 and 316 stainless steel, which meet national safety standards [4][6] Group 1: Types of Stainless Steel - 201 stainless steel is not food-grade and is primarily used for industrial purposes, posing health risks due to high manganese content that can leach into beverages [3] - A study by the Beijing Consumer Association found that 19 out of 50 thermos cups tested were marked as "unqualified products" due to excessive heavy metal content, often linked to the use of 201 stainless steel [3] Group 2: Safe Materials - 304 stainless steel is recognized as food-grade, with low manganese content and good corrosion resistance, while 316 stainless steel offers even better corrosion resistance due to the addition of molybdenum [6] - The national standard GB 4806.9-2023 outlines the acceptable levels of heavy metals and migration limits for food contact metal materials [4] Group 3: Selection Guidelines - Consumers are advised to check labels for product information, including the type of stainless steel used, and ensure it is marked with "304" or "316" [6][7] - The thermos cup should be odor-free, with a uniform appearance and no visible defects, and should pass tests for thermal insulation and sealing performance [7] Group 4: Beverages to Avoid - Certain beverages like tea, milk, soy milk, carbonated drinks, fruit juices, and traditional Chinese medicine should not be stored in thermos cups due to potential health risks and chemical reactions with the metal [9][10][11][12] - For example, storing milk can lead to bacterial growth, while acidic beverages can corrode the metal and leach harmful substances [10][11] Group 5: Safety Precautions - It is recommended to fill thermos cups below the rim to prevent spills and burns, and to supervise children using thermos cups to avoid burns from hot liquids [14]