(1) Fire protection equipment or component parts that actuate or control fire protection equipment, which are sold, leased, installed, or serviced under these provisions, must be labeled or listed in accordance with nationally recognized testing laboratories approved by the department.

(2) The minimum equipment on hand at each service location or in each mobile service vehicle for an entity engaged only in the business of servicing fire extinguishers must be in good working condition and must include:

(a) an adequate supply of extinguishing agents appropriate for the types of extinguishers the firm is requested to fill and facilities for proper storage of extinguishing agents set according to manufacturer specifications;

(b) commercial dry nitrogen supply (-60 degrees Fahrenheit, 51.1 degrees centigrade dew point or less) and pressure regulator with supply and regulated pressure gauges suitable for properly pressurizing fire extinguishers;

(c) equipment for leak testing pressurized extinguishers and/or system cylinders;

(d) adapters, fittings, tools and equipment required for properly servicing all fire extinguishers the entity solicits or accepts for service set according to specifications of the fire extinguisher manufacturer;

(e) closed recovery system(s) and storage to remove and store chemicals from fire extinguisher during servicing;

(f) inventory of spare parts;

(g) a copy of the most recently adopted edition of the fire code; and

(h) a supply of required service and test tags meeting the provisions of these rules.