高中化学教学中经常用到溴。溴极易挥发，有窒息的刺激性气味，有很强的氧化性和腐蚀性，其蒸气有剧毒。从试剂瓶中取少量溴，通常用长径胶头滴管。取过溴的滴管放置不妥就会造成双污染（既污染空气，又污染滴管甚至药品）。为克服这些矛盾，本人制作简易取溴管，经几年试用效 Bromine is often used in high school chemistry teaching. Bromine is highly volatile, has a pungent odor of suffocation, is highly oxidizing and corrosive, and its vapor is highly toxic. Take a small amount of bromine from the reagent bottle, usually with a long-diameter plastic dropper. Improper placement of broaches in the dripper will result in double contamination (contaminating the air, contaminating the dropper or even drugs). In order to overcome these contradictions, I produced a simple bromine tube and tried it for several years.