The standard specifies a gravimetric method for determination of the insoluble (free) carbon content of carbides and hardmetals.
DIN ISO 3908:1991 history
2010DIN EN ISO 3908:2010 Hardmetals - Determination of insoluble (free) carbon - Gravimetric method (ISO 3908:2009); German version EN ISO 3908:2009
1991DIN ISO 3908:1991 Hardmetals; determination of insoluble (free) carbon content; gravimetric method; identical with ISO 3908:1985
0000 DIN ISO 3908:1989
DIN ISO 3908:1991 Hardmetals; determination of insoluble (free) carbon content; gravimetric method; identical with ISO 3908:1985 was changed to DIN EN ISO 3908:2010 Hardmetals - Determination of insoluble (free) carbon - Gravimetric method (ISO 3908:2009); German version EN ISO 3908:2009.