Request If you want to send samples of raw cow milk, milk and dairy products, water or animal food for microbiological, physicochemical and/or instrumental analysis, you must submit them with the appropriate request from: Request of instrumental tests. Raw milk samples. Request of physicochemical tests. Milk and dairy products. Request of microbiological analysis. Milk and dairy products. Request of water samples tests. Request of animal food tests. Request of standard and intercomparison test in raw milk. Request of animal food tests (NIR). Technical annex