This document specifies methods for the determination of carbon content in manganese ores by gravimetric and infrared absorption methods. This document applies to the determination of carbon content in manganese ore. Measuring range (mass fraction): method one 0.02% to 5.00%%; method two 0.02 tin to 9.00 tin.
GB/T 14949.11-2021 Referenced Document
GB/T 2011 Method of sampling and sample preparation of manganese ores in bulk
GB/T 6379.1 Accuracy(trueness and precision)of measurement methods and results Part 1:General principles and definitions
GB/T 6379.2 Accuracy(trueness and precision)of measurement methods and results-Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 14949.11-2021 history
2021GB/T 14949.11-2021 Manganese ores—Determination of carbon content—Gravimetric method and infrared absorption method
1994GB/T 14949.11-1994 Manganese ores- Determination of carbon dioxide content