This Korean Industrial Standard specifies phosphoric acid to be used as industrial chemicaKhereafter referred to as "phosphoric acid").
Remark Corresponding international standards to this standard are adopted as the Annexes of this standard.
ISO R 849:1968 Phosphoric acid for industrial use-Determination of Iron Content-2,2 '-Bipyridyl spectrophotometeric method
ISO 2997:1974 Phosphoric acid for industrial use-Determination of Sulphate content-Method by reduction and tirimetry
ISO 3359 : 1975 Phosphoric acid for industrial use—Determination of arsenic content—Silver diethyldithiocarbamate photometric method
ISO 3706:1976 Phosphoric acid for industrial usedncluding foodstuffs)-Determination of total phosphorous(V) oxide content — Quinoline phosphomolybdate gravimetric method
ISO 3708:1976 Phosphoric acid for industrial use (including foodstuffs)-Determination of chloride content—Potentiometric method
ISO 4285 : 1977 Phosphoric acid for industrial use-Guide to sampling techniques