Provides certified values for total iron, silicon, aluminium, calcium, magnesium, manganese, titanium, phosphorus, sulphur, sodium, potassium, vanadium, arsenic and loss on ignition for a prepared sample of iron ore, and provides indicated values for lead, zinc, copper, chromium, nickel and cobalt. Participating laboratories and comprehensive results are listed in appendices. Included in purchases of ASCRM 004.