1, should be sealed in the refrigerator because the inside of the glow stick reflects the light generated by chemicals, and there is a very fragile film in the middle, which can't be broken, so the chemical reaction will be slower at low temperature and the storage time will be longer.

2. Most of the fluorescent sticks are strip-shaped and wrapped in polyethylene (plastic) with a glass tube interlayer. The liquids inside and outside the interlayer are peroxide and ester compounds respectively. After bending, beating and rubbing, the glass is broken, which causes the reaction of two compounds and makes the fluorescent dye glow. Glow sticks can be used for entertainment night fishing, wedding, outdoor, military, engineering construction, underwater operation and so on.