Wear safety goggles when mixing or pouring chemicals. Do not put anything in your mouth while you are in the laboratory. If you need a refreshment, take a break with your group's permission. Performing experiments while your judgment or reactions are impaired is dangerous. Schedule your all-nighters and celebrations accordingly.
Weighting is as follows.
These guidelines for notebook use are based on standard industrial practice and will be enforced. Write only in waterproof ink, leaving at least one inch margin on all sides. Title and date each page on the top line. Record all data directly in the notebook. Loose sheets of paper in laboratory will be confiscated.