ISO 622:2025
International Standard
Current Edition
·
Approved on
25 June 2025
Coal and coke — Determination of phosphorus — Reduced molybdophosphate photometric method
ISO 622:2025 Files
English
7 Pages
Current Edition
31.14 OMR
ISO 622:2025 Scope
This document specifies a reduced molybdophosphate photometric method for the determination of the total phosphorus mass fraction of hard coal, lignites and coke. Two methods for taking the phosphorus into solution are specified, namely extraction from the coal or coke ash with acid or by repeated oxidation of the coal or coke, by acid, to remove carbonaceous matter.
Best Sellers
GSO 150-2:2013
Gulf Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
OS GSO 150-2:2013
GSO 150-2:2013
Omani Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
OS GSO 2055-1:2015
GSO 2055-1:2015
Omani Standard
HALAL FOOD - Part 1 : General Requirements
GSO 2055-1:2015
Gulf Technical Regulation
HALAL FOOD - Part 1 : General Requirements
Recently Published
ISO 32662-1:2025
International Standard
Liquid petroleum products — Determination of total contamination — Part 1: Middle distillates and diesel fuels
ISO 32662-2:2025
International Standard
Liquid petroleum products — Determination of total contamination — Part 2: Fatty acid methyl esters
ISO 6563:2025
International Standard
Rear load carrier for wheeled vehicles — Requirements and test methods
ISO 18674-7:2025
International Standard
Geotechnical investigation and testing — Geotechnical monitoring by field instrumentation — Part 7: Measurement of strains: Strain gauges