Maryland Environment Section 9-1502
§ 9-1502.
  This subtitle does not apply to a cleaning agent that is:
    (1)   A detergent used in dairy, beverage, or food processing cleaning equipment;
    (2)   A phosphoric acid product, including a sanitizer, brightener, acid cleaner, or metal conditioner;
    (3)   A detergent used in hospitals, veterinary hospitals or clinics, or health care facilities or in agricultural production;
    (4)   A detergent used by industry for metal cleaning or conditioning;
    (5)   Manufactured, stored, or distributed for use or sale outside of the State;
    (6)   Used in any laboratory, including a biological laboratory, research facility, chemical laboratory, and engineering laboratory; or
    (7)   Used in a commercial laundry that provides laundry services for a hospital, health care facility, or veterinary hospital.