If the evaporator tube becomes contaminated with nonvolatile material resulting in poor chromatography, it is recommended that the instrument is initially washed with a solvent suitable for the contamination, or a 1:1 mixture of acetone/water.
Depending on use, it is recommended to clean the evaporator tube once a week or every 40 h of use as a preventive routine. It is also recommended to clean the unit following the use of buffers. If cleaning the unit does not solve the problems, consult Agilent Technologies for further assistance.
NOTE
Do not use solvents that contain additives when performing the cleaning procedure.
NOTE
Ensure that the instrument is at equilibrium under the below conditions before leaving the instrument unattended.
Set the evaporator temperature to 40 °C, the nebulizer temperatures to 40 °C, and the gas flow to 2.8 SLM.
Pump the “cleaning” solvent into the instrument at 1 – 2 mL/min (while in the RUN mode) overnight, or for a minimum of 4 h.
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id: 4344789131