References
- National Institute for Occupational Safety and Health (NIOSH) . 1994 . NIOSH Manual of Analytical Methods, , 4th ed. Edited by: Elder , P. M. Cincinnati, OH : NIOSH. . Methods 1500, 1501
- National Institute for Occupational Safety and Health (NIOSH) . 1994 . NIOSH Manual of Analytical Methods, , 4th ed. Edited by: Elder , P. M. Cincinnati, OH : NIOSH. . Method 1301
- National Institute for Occupational Safety and Health (NIOSH) . 1994 . NIOSH Manual of Analytical Methods, , 4th ed. Edited by: Elder , P. M. Cincinnati, OH : NIOSH. . Method 1403
- National Institute for Occupational Safety and Health (NIOSH) . 1994 . NIOSH Manual of Analytical Methods, , 4th ed. Edited by: Elder , P. M. Cincinnati, OH : NIOSH. . Method 1401
- National Institute for Occupational Safety and Health (NIOSH) . 1994 . NIOSH Manual of Analytical Methods, , 4th ed. Edited by: Elder , P. M. Cincinnati, OH : NIOSH. . Method 1400
- Occupational Safety and Health Administration (OSHA) . 1989 . OSHA Manual of Analytical Methods. Salt Lake City, Utah : Organic Methods Evaluation Branch, OSHA. . Method 7
- Flick , E. W. , ed. 1985 . Industrial Solvent Handbook, , 3rd ed. 637 – 647 . Park Ridge, NJ : Noyes Data Corporation. .