This part of GB/T 5195 specifies the method for the determination of calcium chloride content by EDTA titration and sodium saturation-potentiometric titration. This section applies to the determination of calcium fluoride content in fluorite. EDTA titration, determination range (mass fraction): ———60%j3; Yanguan-potentiometric titration, determination range (mass fraction): this 90%%.
GB/T 12808 Laboratory glass instrument single marked line pipette
GB/T 22564 Fluorspar.Sampling and sample preparation
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 5195.1-2017 history
2017GB/T 5195.1-2017 Fluorspar—Determination of calcium fluoride content—EDTA titration method and distillation-potentiometric titration method
2006GB/T 5195.1-2006 Fluorspar. Determination of calcium fluoride content
1985GB/T 5195.1-1985 Methods for chemical analysis of fluor-spar--The EDTA volumetric method for the determination of calcium fluoride content