1. Tour Lab Chemical Hygiene Plan (2004), pg. 4 S TANDARD O PERATING P ROCEDURES A UGUST 30, 2011

2. Access to emergency equipment should NEVER be blocked Dirty glassware should never be left in the bottom of the sink Liquids should never be stored above 5’6” or above any solid chemicals All chemical containers must be labeled in English H OUSEKEEPING

3. Keep all work areas clear of clutter; keep all aisles clear of all chemicals All chemicals should be placed in their assigned storage areas at the end of each workday Wastes should be properly labeled and kept in their proper containers H OUSEKEEPING

4. Promptly clean up all spills; properly dispose of the spilled chemical and cleanup materials. Contact the Environmental Safety Office at x4444 for assistance. Horseplay and running in the laboratory are strictly forbidden H OUSEKEEPING