CETAC Aridus II, Operator'S Manual

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Aridus II™ Operator’s Manual
30
NOTE:
The temperature controllers are set to allow adjustment over a certain range.
You must contact CETAC Customer Support if you desire an operating
temperature outside the specified range. Unauthorized changes in the
temperature settings will immediately terminate the warranty.
Switching from Organic Samples to Aqueous
Samples and Aqueous Samples to Organic Samples
When switching from analyzing organic solvents to aqueous samples, nebulize
2-propanol (isopropyl alcohol, IPA) for 10 minutes before running the aqueous
samples. This will condition the spray chamber and membrane desolvation
system.
When returning to organic samples, use 2-propanol to re-condition the
Aridus II
™
.
Carefully rinse the Aridus II
™
spray chamber and membrane with deionized water
when switching between strong acids (e.g. nitric acid) and organic solvents. If
heated residue from nitric acid contacts an organic solvent, a charring reaction can
occur in the desolvation system. Failure to carefully rinse the membrane system
between organics and strong acid samples can cause damage to the system and
may void warranty conditions. (Refer to Chapter 6, “Rinse Procedure for the
Membrane Desolvation System”).
CAUTION