Paragraph 4
APPARATUS
4.1
Chromatographic column—A glass column, internal diameter: 20 to 25mm; length: 100 to 150mm plugged at the lower end with glass wool.
4.2
Spectrophotometer, with 10mm cells.
APPARATUS
Chromatographic column—A glass column, internal diameter: 20 to 25mm; length: 100 to 150mm plugged at the lower end with glass wool.
Spectrophotometer, with 10mm cells.