GB/T 33687-2017 General testing rules for gangue

GB/T 601-2002 Chemical reagent Preparations of standard volumetric solutions GB/T 601-2016 Chemical reagent—Preparations of reference titration solutions GB 3100-1993 SI units and recommendations for the use of their multiples and of certain other units GB/T 3101-1993 Quantities and units—General principles GB/T 3102.1-1993 Quantities and units—Space and time GB/T 3102.2-1993 Quantities and units—Periodic and related phenomena GB/T 3102.3-1993 Quantities and units—Mechanics GB/T 3102.4-1993 Quantities and units—Heat GB/T 3102.5-1993 Quantities and units—Electricity and magnetism GB/T 3102.6-1993 Quantities and units—Light and related electromagnetic radiations GB/T 3102.7-1993 Quantities and units—Acoustics GB/T 3102.8-1993 Quantities and units—Physical chemistry and molecular physics GB/T 3102.9-1993 Quantities and units—Atomic and nuclear physics GB/T 3102.10-1993 Quantities and units—Nuclear reactions and ionizing radiation GB/T 3102.11-1993 Mathematical signs and symbols for use in the physical sciences and technology GB/T 3102.12-1993 Characteristic numbers GB/T 3102.13-1993 Quantities and units—Solid state physics GB/T 6379.2-2004 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 6682-1992 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