(a) This chapter implements Occupations Code, Chapter 1953, which requires the Texas Commission of Licensing and Regulation to adopt rules to implement a program for the registration of sanitarians.(b) These sections apply to persons whose duties in consumer health require the application of scientific knowledge to recognize, evaluate, and control hazards associated with the distribution of contaminated, adulterated, unsafe and misbranded foods, drugs, medical devices, and cosmetics and to persons whose duties in environmental health or sanitation require the application of scientific knowledge to recognize, evaluate, and control environmental hazards and to preserve and improve environmental factors for the achievement of the health, safety, comfort, and well-being of humans.