PerkinElmer AVIO 500, Customer Hardware And Service Manual

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Setting Instrument Parameters
There is a three slot torch for organics (Part No. N0790249) that can be ordered.
This is the best torch to use for axial viewing for samples with organics or high
dissolved solids. Using the long torch will extend the torch life since the long torch
does not have a slot.
For more information on the above parameters, refer to the Syngistic for ICP Guide
on the Syngistic for ICP CD.
Important Considerations for Dual Viewing
Optimum conditions will depend on the type of analyses being performed;
however, in general, the following considerations are important for axial viewing.
Settings are given for the Scott-type spray chamber and cross-flow nebulizer.
The following parameters are set in the method:
• Auto integration times are recommended, using the following settings:
Auto Int Samp Time: Min: 2 sec, Max: 10 sec
(Auto Integration Sampling Time)
• Normal resolution is recommended.
• Check that the read delay, wash time, and rinse times you are using are
sufficient. In general, either longer times are required or a fast pump speed. In
addition, check that the sample waste is being drained properly to avoid
solution filling the torch.
All integration parameters are set in the method editor.
Auto Integration Threshold: 2.0 sec recommended (default setting)
The Auto Integration Threshold sets a level for the integration. When the
software does a "snapshot" (called a pre-shot) for each solution, it will
determine the sampling time and adjust it based on the threshold. If the time is
greater than or equal to the threshold, the maximum sampling time will be
used. If it is less than the threshold, the minimum sampling time will be used.
In addition, see the following operating considerations:
Note
A Max time of 100 seconds may be required for the ultimate detection limit
work.