The Dairy and Food Laboratory tests samples of milk, milk products, and food products for wholesomeness and compliance with labeling claims. Milk and milk products are tested under a national program called the National Conference of Interstate Milk Shipments (NCIMS). Under this program, samples are tested for bacteria, somatic cell count, drug residues, proper pasteurization, and other parameters. In addition, water from dairy operations and plants is tested for certain microbiological parameters.