Definitions
Pollutant gases
Reciprocating engines
Determination of content
Smoke
Opacity
Emission
Filtration
Exhaust gases
Optical measurement
Soot
Internal combustion engines
Testing conditions
Gases
Prime movers
Combustion products
Link: BS ISO 8178-3:2019 Reciprocating internal combustion engines. Exhaust emission measurement Test procedures for measurement of exhaust gas smoke emissions from compression ignition engines using a filter type smoke meter
Source: BSI Standards