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Requests Quickest way to ask for a quote, get a demo copy, arrange training, or suggest a feature Subscribe Subscribe to our email distribution list to receive the latest updates, or unsubscribe from it. ChemPlugin SDK available now! The premier toolset for aqueous chemists. Powerful algorithms, intuitive interface. It is especially important to do this if values have been hand-entered as opposed to imported directly from an instrument. You should carefully check all hand-typed values against their original values.
If you are working with major element data, you might check that the totals are within an acceptable error e. All other values should be inspected to determine that they are "reasonable" given what you already know about the rock. For example, the reported values should be geologically reasonable. Many instruments report negative values when interfering element overlaps are present.
These numbers should not be reported as "zero" but rather as "below detection" or some other code indicating that the element has been analyzed, but that it's abundance is below the detection limit of the instrumental method.
Where values are not available for a particular sample, these should be left blank or labeled with some other code indicating "not analyzed.
In this case, you may need to enter special numeric codes e.
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