Exclusions and Exceptions. (a) Exclusions. – This Act shall not apply to a cleaning agent that is: (1) used in hospitals, health care facilities, veterinary hospitals or clinics; (2) used in agricultural production; (3) used in any laboratory (biological, chemical, engineering laboratories or research facility). (b) Exceptions. – For manufacturing purposes, the allowable amount shall not exceed .5% phosphorous. A person may use, sell, manufacture or distribute for use or sale a cleaning agent that contains phosphorus by weight, if it is: (1) A detergent used for any household purposes. (2) A substance, the Division of Environmental Quality, by regulation, excluded from the phosphorous limitation contained in Section 3802 based on a finding that compliance with this act would: (i) create a significant hardship on the user; or (ii) be unreasonable because of the lack of an adequate substitutecleaning agent. Source: PL 12-66, § 4, modified.