General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 24225-2009
Scope
WARNING: Personnel using this standard should have practical experience in formal laboratory work. This standard does not address all possible safety issues. It is the user's responsibility to take appropriate safety and health measures and ensure compliance with relevant national regulations. This standard specifies the potassium dichromate titration method for the determination of total iron content in chromium ore after reduction. This standard applies to the determination of total iron content in chromium ore.
GB/T 6682 Water for analytical laboratory use.Specification and test methods
ISO 6150 Pneumatic fluid power — Cylindrical quick-action couplings for maximum working pressures of 10 bar, 16 bar and 25 bar (1 MPa, 1,6 Mpa, and 2,5 MPa) — Plug connecting dimensions, specifications, applic*, 2018-12-19 Update
GB/T 24225-2009 history
2009GB/T 24225-2009 Chromium ores.Determination of total iron content.Titrimetric method after reduction