GB/T 5195.14-2017 Fluorspar—Determination of magnesium content—Flame atomic absorption spectrometry

GB/T 5195.1-2017 Fluorspar—Determination of calcium fluoride content—EDTA titration method and distillation-potentiometric titration method GB/T 5195.3-2017 Fluorspar—Determination of loss in mass at 105 ℃—Gravimetric method GB/T 5195.5-2017 Fluorspar—Determination of total sulfur content—Pipe furnace combustion iodic acid potassium titration method GB/T 5195.6-2017 Fluorspar—Determination of phosphorus content—Photometric method GB/T 5195.13-2017 Fluorspar—Determination of aluminium content—EDTA titration method GB/T 5195.15-2017 Fluorspar—Determination of calcium, aluminum, silicon, phosphorus, sulfur, potassium, iron, barium and lead content—Wavelength dispersive X-ray fluorescence spectrometric method GB/T 5195.16-2017 Fluorspar—Determination of silicon,aluminum,iron,potassium,magnesium and titanium content—Inductively coupled plasma atomic emission spectrometry

GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 22564-2008 Fluorspar—Sampling and sample preparation