Food testing is the process of analyzing food samples to identify and quantify the presence of harmful contaminants, such as bacteria, viruses, chemicals, and other harmful substances. Food testing helps in ensuring that the food we eat is safe and free from harmful contaminants.'Food analysis' is generally understood to refer to chemical or physical tests, assays or measurements, and could include a wide variety of analyses, such as determination of water, fat, fibre, nitrite or nitrate content, and measurement of mycotoxins and pesticide or herbicide residues.