ISO 622:2016

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Solid mineral fuels — Determination of phosphorus content — Reduced molybdophosphate photometric method

ISO 622:2016 refers to an international standard that outlines a method for determining the phosphorus content in solid mineral fuels, like coal and coke, using a reduced molybdophosphate photometric method; essentially, it specifies a standardized laboratory procedure to measure the amount of phosphorus present in these fuel materials.