Good housekeeping practices are being conducted

Regular housekeeping reduces injuries and accidents in the workplace. Good housekeeping includes appropriate storage of chemicals, safe and regular cleaning of the facility, disinfection of benches, sterilization of biohazardous waste and proper arrangement of laboratory equipment. Access to fire exits, emergency equipment and hallways must be maintained at all times.

Benchtops or fume hoods with multiple containers of open, unneeded or unused chemicals can create dangerous conditions if a fire occurs in the laboratory. Spills and accidents are more likely when a benchtop is overloaded with equipment and chemicals.


  • Biosafety in Microbiological and Biomedical Laboratories. HHS Publication No. (CDC) 21- 1112, 5th Edition.
  • NIH Guidelines for Research Involving Recombinant or Synthetic Nucleic Acid Molecules. April 2019. Appendix G-II-A-1-h. and Appendix K-II-C.
  • MSU Biosafety Manual.
  • MSU Bloodborne Exposure Control Plan.
  • MSU Chemical Hygiene Plan 2.4 (E) and 2.5 (H)
  • MSU Waste Disposal Guidance
  • International Fire Code 2015, Part II, Section 304.1

Corrective actions:

Remove all unnecessary items from biosafety cabinets, chemical fume hoods and benches. Organize and disinfect your working area and coordinate sterilization of accumulated biohazardous waste before leaving the laboratory for the day. Also limit the amount of paper, boxes, fabrics or unnecessary materials in the laboratory to facilitate cleaning and avoid blockage of exits and hallways and to prevent spread of fire.

MSU EHS can assist you in removing and disposing of old, unneeded or outdated chemicals in your laboratory. Contact MSU EHS Hazardous Waste Coordinator Brian Smith at 517-432-4454 for more information.