1. Personal Protection What are you trying to protect?

2. Eyes, skin and membranes Hands and feet Fingers and toes Respiratory System Digestive system

3. Routes of exposure Absorption Injection Ingestion Inhalation – most common route

4. Physical hazards Flying particles – explosion or impact Very cold materials – cryogens Molten metals and other very hot materials Radiation Falling or flying heavy objects – gas cylinders Electric shock Noise

5. Hazard Control Administrative – training and choices of activities and experiments Appropriate attire – closed toes shoes, long hair tied back Engineering – hoods, shields Protective equipment – goggles, gloves, lab coats, aprons

6. Fume hoods – purpose of baffles

7. Non-bypass fume hood

8. Bypass fume hood

9. Auxiliary or “make up” air Minimizes loss of conditioned air Non-conditioned air enters top of hood at by-pass area Technical problems have decreased usage…..

10. The eye

11. Eye and face protection Simulation of chemicals in the eye 6 M HCl 6 M NaOH Household chemicals Adapted from Chem Fax 801, Flinn Scientific, 1996

14. Laws and Regulations OSHA Face and Eye Protection 29 CFR 1910.133 “employers must provide appropriate face and eye protection” Washington State requires eye protection RCW 70.100.010 to.040

15. Contact Lenses in the Lab Generally considered acceptable because: - better peripheral vision - more comfortable - soft contacts absorb UV, protecting cornea - some very limited protection from chemicals

16. “You can eat with false teeth, you can dance with a wooden leg, but you can’t see with a glass eye.”

17. Skin Protection The largest organ in the body! About 3’ x 7’ for the average adult Regulates gody temperature Acts as a barrier to bacteria Excretes salts and liquids Provides sense of touch

18. Three layers - epidermis - dermis - hypodermis

19. OSHA Skin Protection Standard Hand Protection Standard 29 CFR 1910.138 No one material is suited for all applications Exposures include chemicals, cuts, abrasions, heat, cold Latex gloves can trigger allergies….

21. Clothing selection Clothing, hair and jewelry – Shoes Protective clothing - lab coats and aprons

22. Properties of common clothing fibers

23. Personal Protection Suitable for the hazard Provides the appropriate level of protection Properly maintained Meets the regulatory requirements