NF B40-673-1*NF EN ISO 21078-1:2008 Determination of boron(III) oxide in refractory products - Part 1 : determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes
2008NF B40-673-1*NF EN ISO 21078-1:2008 Determination of boron(III) oxide in refractory products - Part 1 : determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes