WARNING: Personnel applying this standard should have practical experience in formal laboratory work. This section does not address all possible security issues. It is the user's responsibility to take appropriate safety and health measures and ensure compliance with the conditions stipulated in the relevant national laws and regulations. This part specifies the determination of sulfur content by infrared absorption method and combustion neutralization titration method. This part is applicable to the determination of sulfur content in ferrotungsten. The determination range (mass fraction) of infrared absorption method: 0.0050%-0.25%; the determination range (mass fraction) of combustion neutralization titration method: 0.0050%-0.25%.
GB/T 7731.12-2008 Referenced Document
GB/T 4010 Ferroallys sampling and preparation of samples for chemical analysis*, 2015-09-11 Update
GB/T 7731.12-2008 history
2008GB/T 7731.12-2008 Ferrotungsten. Determination of sulfur content. Infrared absorption method and combustion titration method
1988GB/T 7731.12-1988 Methods for chemical analysis of ferrotungsten--The infrared absorption method for the determination of sulfur content