GB/T 4375.9-1984 Methods for chemical analysis of gallium--The phenylfluorone-polyethylene glycol octyl phenyl ether photometric method for the determination of germanium content
This standard applies to the determination of germanium in gallium. Measuring range: 0.000050~0.015%.
GB/T 4375.9-1984 history
1984GB/T 4375.9-1984 Methods for chemical analysis of gallium--The phenylfluorone-polyethylene glycol octyl phenyl ether photometric method for the determination of germanium content
GB/T 4375.9-1984 was changed to YS/T 520.9-2006 Gallium Chemical Analysis Method Phenylfluorone-Polyethylene Glycol Octyl Phenyl Ether Spectrophotometric Determination of Germanium.