Please use them. Lab coats can also be provided upon request. Long hair and loose clothing should be restrained at all times. They must know who is in the labs, when and why. They can also check up on you at regular intervals if it is necessary for you to work alone.
Accidents happen at inconvenient times.
If you feel uncomfortable or unsafe working in a particular environment or with a particular substance, you should inform the Lab Manager or faculty member with whom you are working. You have the right to a safe work environment. Remember safety is a personal responsibility. Wear protective clothing and equipment whenever necessary. Be prepared to give your location and the nature of the accident.