Guide to smoke measurement units. Their basis and use in smoke opacity test methods.
NORMA vydaná dňa 15.1.1998
Označenie normy: BS 7904:1998
Dátum vydania normy: 15.1.1998
Počet strán: 16
Približná hmotnosť: 48 g (0.11 libier)
Krajina: Britská technická norma
Kategória: Technické normy BS
This standard is intended to describe the origins of the units used in the standards relating to measurement of smoke by optical methods, and any relationships between the units. Status: Confirmed