Experiment 8 SAMPLING TECHNIQUES
OBJECTIVES: • To develop different types of sampling techniques. • Use as one of major processes in technical analyzing. • Develop accuracy when measuring samples. INTRODUCTION: Analytical procedure consist several important steps. The specific analytical procedure chosen depends on how much sample is available and, in a broad sense, how much analyte is present. Then, discuss a general classification of the types of determinations based on these factors. After selecting the particular method to be used, a representative sample should be in hand first. The sampling process involves obtaining a small amount of material that accurately represents the bulk of the material being analyzed. Acquiring a representative sample is a statistical process. Sampling is the most difficult step in the entire analytical process and step that limits the accuracy of the procedure. Then, sampling for a chemical analysis necessarily involves statistics because conclusions will be drawn about a much
