Dimethylphenoxyacetic Acid on Ultisil XB-C18

Sample solution

Column Ultisil XB-C18 4.6×250 mm, 5 μm (P/N: 00201-31043)
Mobile Phase Methanol: phosphoric acid solution (adjust pH to 2.5 with phosphoric) =65:35
Detection 280 nm
Temperature 30°C
Flow Rate 1ml/min
Injection Volume 20 µl