Understanding Dilutions
In this article, we explain the importance of dilution as it applies to analytical chemistry, what dilution factors are, and specific equations and calculations to use for concentration and...
Community Education — laboratory
Understanding a Certificate of Analysis
A Certificate of Analysis (COA, Figure 1) is a document that provides laboratory results for tests conducted. It is given to customers who pay for testing from an analytical laboratory...
Understanding Measurement Uncertainty and Test Results Over 100%
The goal of this article is to provide context around measurement uncertainty and understanding analytical test results over 100%. The concept of measurement uncertainty is introduced and discussed in terms...