Reason 1: longhair is not properly tied back it is loose and hanging in your face and over chemicals
Explanation: longhair can clutter your vision and also get into chemicals and any other substances you are using in the lab causing error in your results and also contaminating substances
Reason 2:Wearing long baggy clothing that is not cinched up or removed
Explanation:Long baggy sleeves can catch on fire and also make it difficult to transport delicate items safely and efficiently