KS M 1918-2002(2007)
Maleic anhydride for industrial use-Methods of test-Determination of maleic anhydride content-Titrimetric method
KS M 1912-2002(2007)
Phthalic anhydride for industrial use-Methods of test-Determination of maleic anhydride content-Polarographic method
KS M 1919-2002(2007)
Maleic anhydride for industrial use-Methods of test-Determination of iron content-2,2′-bipyridyl photometric method