Transcription of 12 LABORATORY SAMPLE PREPARATION - epa.gov
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12 LABORATORY SAMPLE PREPARATION - epa.gov
12 LABORATORY SAMPLE PREPARATION . Introduction On first impression, SAMPLE PREPARATION may seem the most routine aspect of an analytical protocol. However, it is critical that analysts realize and remember that a measurement is only as good as the SAMPLE PREPARATION that has preceded it. If an aliquant taken for analysis does not represent the original SAMPLE accurately, the results of this analysis are questionable. As a general rule, the error in sampling and the SAMPLE PREPARATION portion of an analytical procedure is considerably higher than that in the methodology itself, as illustrated in Figure Sampling SAMPLE PREPARATION Concentration, Separation, Isolation, etc.
Laboratory Sample Preparation MARLAP 12-2 JULY 2004 for sample preparation to avoid sample loss and sample contamination. Due to the physical nature of the matrix, sample preparation for solids requires the most attention, and therefore is
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