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Determination
Preparation of sample and blank test solutions
6.3—6.3.1 Dilute sample solutions (6.1.1 or 6.1.2) and the blank solution (6.2) to a concentration within the optimal measuring range of the flame photometer.
Preparation of the calibration solutions
6.3.2 By diluting the standard solution (3.6), prepare at least five standard solutions of increasing concentration corresponding to the optimal measuring range of the flame photometer.
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