In research and development, science technicians construct or maintain experimental equipment, set up and monitor experiments, and calculate and record the results. In production, science technicians follow the general directions of scientists and engineers, often without close supervision. Many do quality control testing to ensure that products contain the proper proportions of ingredients or meet strength and durability standards. In the petroleum industry, science technicians perform a wide variety of technical services. Science technicians usually specialize in a particular area and often have a more specific job title, such as chemical technician, for example, rather than the general title of science technician.
Agricultural technicians work with agricultural scientists in food production and processing.
Some conduct tests and experiments to improve the yield and quality of crops or to increase the resistance of plants and animals to disease, insects, or other hazards. Other agricultural technicians do animal breeding and nutrition work. Biological technicians work with biologists studying living organisms. Microbiological technicians study microscopic organisms and may do medical research. Chemical technicians work with chemists and chemical engineers, developing and using chemicals and related products and equipment.