ABSTRACT
Report of analyses are the written records of analytical work. The content of the report should include all of the necessary information and should be clear and understandable for the peruser. All documentation used to approve and defend reported data must be collected and should be available and referenced so it can be found at any time it may be needed. This chapter presents documentation that is required to approve and defend reported data. Numerical data are often obtained with more digits than are justified by its accuracy and precision. Reporting the calculated confidence limit of the measurement helps to estimate the reliability of the result. Standard deviation is calculated to three significant figures and rounded to two when reported as a data. Units used to express analytical results depend on the analytical method used, the concentration of the analytes, and the matrices of the sample analyzed.
