Maintenance and Spare Parts
74 Agilent Vapor Generation Accessory VGA 77 and VGA 77P User’s Guide
WARNING
Corrosive Chemicals
Contact with concentrated acids can cause severe chemical burns. Always
wear protective clothing and gloves while cleaning the separator.
To clean the gas/liquid separator:
1 Disconnect the tubing from the vapor outlet of the separator.
2 Disconnect the tubing from the sample inlet of the separator.
3 Carefully remove the rubber mounting strap holding the
separator in place.
4 Disconnect the drain tubing from the drain in the bottom of the
module. You may now lift the separator out of the module.
5 Disconnect the tubing from the inert gas inlet of the separator.
6 If the separator has been exposed to solutions containing
potassium iodide, soak the separator in sodium hydroxide
solution (0.5% w/v) for at least 30 minutes. Wash thoroughly with
dilute hydrochloric acid and then wash thoroughly with distilled
water. Allow to air dry in a dust-free location.
NOTE
If the separator has not been exposed to potassium iodide solutions, it may be
treated in the same way as the absorption cell. To avoid KI contamination, it is
recommended that you dedicate a separate module to the analysis of those
elements requiring pre-reduction with KI (i.e., As or Sb).
7 Refit the separator into its mounting bracket, secure it with the
retaining strap and reconnect all tubing. If the system is not to be
used for some time, the separator should be filled with distilled
water.
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