A paint manufacturer produces a wide range of paint products for industrial, commercial, and residential applications. The products are manufactured in large batches of up to 10 tons. Before each batch is packaged and shipped, a number of tests are performed to ensure that the product meets strict quality control requirements. The testing program includes the use of culture-based plate tests to evaluate microbiological quality. Microbiological monitoring is an important component of the paint manufacturing quality control process, as microbiological contamination can cause a variety of serious product defects, which can lead to costly recalls and cause damage to the manufacturer’s reputation.