GB/T 14949.12-2021
Manganese ores—Determination of combined water content—Gravimetric method (English Version)

Standard No.

GB/T 14949.12-2021

Language

Chinese, Available in English version

Release Date

2021

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Latest

GB/T 14949.12-2021

Replace

GB/T 14949.12-1994

Scope

This document specifies the gravimetric determination of the combined water content in manganese ores. This document is applicable to the determination of combined water content in manganese ore, determination range (mass fraction): 1.00%~8.00%.

GB/T 14949.12-2021 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 14949.12-2021 history

• 2021 GB/T 14949.12-2021 Manganese ores—Determination of combined water content—Gravimetric method
• 1994 GB/T 14949.12-1994 Manganese ores- Determination of combined water content

GB/T 14949.12-2021 -All Parts