GB/T 6730.8-2016(\u82f1\u6587\u7248)
铁矿石 亚铁含量的测定 重铬酸钾滴定法
GB/T 24583.1-2019(\u82f1\u6587\u7248)
钒氮合金 钒含量的测定 硫酸亚铁铵滴定法
GB/T 22409-2008
Photography - Processing chemicals - Specifications for possium sulfite solution,650g/L
GB 25570-2010
SN/T 3809-2014
Determination of potassium content in potassium chloride and potassium sulphate - X-ray fluorescence spectrometry
HB/Z 5107.4-2004
Methods for analysis of chemical oxidation solution for magnesium alloy-Part 4:Determination of aluminum potassium sulfate content in aluminum potassium sulfate oxidation solution by EDTA volumetric method
GB/T 7469-1987
Water quality--Determination of the total mercury--Potassium permanganate-pootassium peralfate descomposed method--Dithizone spectrophotometric method
KS M ISO 5990-2019
Photography — Processing chemicals —Specifications for potassium sulfite, 650 g/L solution
BS ISO 3629:2000
Photography. Processing chemicals. Specifications for potassium metabisulfite
GB/T 15057.8-1994
Limestonefor chemical industry--Determination of sulfur content--Gravimetric and combustion-iodate titrimetric methods
ISO 3629:2000
Photography — Processing chemicals — Specifications for potassium metabisulfite
GB/T 3514-1992
Rubber, vulcanized—Determination of free sulphur content—Sodium sulphite method
BS ISO 5990:2000
Photography. Processing chemicals. Specifications for potassium sulfite, 650 g/l solution
ISO 5990:2000
Photography — Processing chemicals — Specifications for potassium sulfite, 650 g/l solution
USP f100514
Potassium Sulfite
USP f100504
Potassium Metabisulfite
ISO 3629:1996
Photography — Processing chemicals — Specifications for potassium metabisulfite
GB/T 3286.7-2014
Methods for chemical analysis of limestone and dolomite―Part 7: The determination of sulphur content―The pipe furnace combustion iodic acid potassium titration method,the high frequency combustion with infrared absorption method and the barium sulfate gravimetric method
ISO 5990:1996
Photography — Processing chemicals — Specifications for potassium sulfite, 650 g/l aqueous solution
KS D 1673-5-2023
Iron and steel — ICP atomic emission spectrometric method — Part 5: Determination of niobium content — Dissolution in phosphoric and sulfuric acids or Dissolution in acids and fusion with potassium disulfate