GB/T 5070.3-2002 Chemical analysis of magnesia chromite refractories—Part 3:Determination of iron oxide—O-phenanthroline photometric method

GB/T 5070.1-2002 Chemical analysis of magnesia chromite refractories—Part 1:Determination of loss on ignition—Gravimetric method GB/T 5070.2-2002 Chemical analysis of magnesia chromite refractories—Part 2:Determination of silicon dioxide—Molybdenum blue photometric method GB/T 5070.4-2002 Chemical analysis of magnesia chromite refractories—Part 4:Determination of aluminium oxide—EDTA volumetric method GB/T 5070.5-2002 Chemical analysis of magnesia chromite refractories—Part 5:Determination of titanium dioxide—Diantipylmethane photometric method GB/T 5070.6-2002 Chemical analysis of magnesia chromite refractories—Part 6:Determination of calcium oxide—EGTA volumetric method GB/T 5070.7-2002 Chemical analysis of magnesia chromite refractories—Part 7:Determination of calcium oxide—EDTA volumetric method GB/T 5070.8-2002 Chemical analysis of magnesia chromite refractories—Part 8:Determination of magnesium oxide—CyDTA volumetric method GB/T 5070.9-2002 Chemical analysis of magnesia chromite refractories—Part 9:Determination of magnesium oxide—EDTA volumetric method GB/T 5070.10-2002 Chemical analysis of magnesia chromite refractories—Part 10:Determination of chromium oxide—Ammonium ferrous sulfate volumetric method GB/T 5070.11-2002 Chemical analysis of magnesia chromite refractories—Part 11:Determination of manganese oxide—Atomic absorption spectrophotometric method GB/T 5070.12-2002 Chemical analysis of magnesia chromite refractories—Part 12:Determination of potassium oxide and sodium oxide—Atomic absorption spectrophotometric method

GB/T 5070.3-1985

GB/T 5070-2007 Chemical analysis of refractories containing chrome

GB/T 5070.1-2002 Chemical analysis of magnesia chromite refractories—Part 1:Determination of loss on ignition—Gravimetric method 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 10325-2001 Shaped refractory products—Sampling and acceptance testing GB/T 10325-2012 Shaped refractory products—Rule of acceptance,sampling and inspection GB/T 12805-1991 Laboratory glassware—Burettes GB/T 12805-2011 Laboratory glassware—Burettes GB/T 12806-1991 Laboratory glassware—One-mark volumetric flasks GB/T 12806-2011 Laboratory glassware—One-mark volumetric flasks GB/T 12808-1991 Laboratory glassware—One-mark pipettes GB/T 12808-2015 Laboratory glassware—One mark pipettes GB/T 17617-1998 Refractory products—Sampling of raw materials and unshaped products GB/T 17617-2018 Rule of sampling and inspection for refractory raw materials

BS 1902:1974