The detection wavelength is set at the wavlength lower than 245 nm since ethyl acetate has strong absorption at the detection range lower than 245nm. The baseline drifting will be most dominant when ethyl acetate is used as eluting solvent and we choose 220 nm as the detection wavelength.
Please change the detection wavelength. It is recommended to choose 254nm as the detection wavelength. If 220 nm is the only wavelength suitable for the sample detection, user should collect the eluent with carefully judgement and excessive solvent might be collected in this case.
Post time: Jul-13-2022