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Project Goals
1. Determine the Matrix card effect on control stability
2. Determine the effect on solar collection with the 7.2 rev of the Matrix Card
3. Determine the pH effect of the 7.1 and 7.2 Matrix Cards

Experiment #1 – Control stability on Ion Chromatography Control Samples
The chemical instability of the Ion Chromatography controls even in a refrigerated condition is typically 48-52 hours. In this experiment we will mix four elements into a 100 ppb combined standard and measure it every 12 hours for three days then once a week for 5 weeks. The two variables we will assess are the control (not exposed to the DIGRIF108 7.1 matrix card) and the solution exposed to the bottom of the clear container for ½ hour before it was made up, then ½ hour each time it was tested (before testing) with only fluorescent lighting exposure.

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