What first aid do you perform on a burn in the science lab?

Copious and continual flooding of the area with clean cold water. Most chemical burns happen in factories and danger areas usually have hoses or showers in the danger area to deal with such emergencies. You keep directing the water flowing over the victim for 5 to 10 minutes after the burning stops and then seek medical help. Depending on the chemical, contaminated clothing over the burned area may have to be cut off, and the victim covered with something like a clean towel or sheet before they are transported to hospital.