取亚硝酸钠晶体5g，倒入250mL烧杯中，用量简量取新洁尔灭20ml，，倒入250mL亚硝酸钠烧杯中，加蒸馏水150mL，用玻璃律搅拌。然后转移到1000ml。的容量瓶中，加蒸馏水到刻度线为止。混和均匀后，倒入玻璃缸或塑料水槽中，把学生实验及教师演示实验所用过的镊子全部浸没在亚硝酸 Take 5g of sodium nitrite crystals, pour into a 250ml beaker, and dilute the amount of benzalkonium chloride (20ml) into a 250ml sodium nitrite beaker, add distilled water (150ml), and stir with glass. Then transfer to 1000ml. In the flask, add distilled water to the mark. After mixing evenly, pour it into a glass jar or a plastic sink and immerse all the lice used in the student’s experiment and the teacher’s demonstration experiment in nitrous acid.