1. American National Standard for Laboratory Ventilation (ANSI/AIHA Z9.5), p. 13, 5.7. National Fire Protection Association, Standard NFPA 45, Appendix paragraph A-6-4.
2. National Fire Protection Association, Standard NFPA 45, Appendix paragraph A-6-3.4.
3. American National Standard for Laboratory Ventilation (ANSI/AIHA Z9.5), p. 12, 5.3
4. National Fire Protection Association, Standard NFPA 45, Appendix paragraph A-6-4.5.
5. U.S. OSHA, 29 CFR Part 1910, (Recommendation) p. 3332, 4. ASHRAE, 1995 Handbook—HVAC Applications, p. 13.8. National Fire Protection Association, Standard NFPA 45, Appendix paragraph A-6-3.2.