SNI 19-7117.6-2005 Exhaust gas emissions - Stationary sources - Part 6: Test methods of ammonia (NH3) content by indophenol methods using spectrophotometers
2005SNI 19-7117.6-2005 Exhaust gas emissions - Stationary sources - Part 6: Test methods of ammonia (NH3) content by indophenol methods using spectrophotometers