Ark. Code Ann. § 17-43-301: Certificate required

(a) No person shall offer his or her service as a registered sanitarian or use, assume, or advertise in any way any title or description tending to convey the impression that he or she is a registered sanitarian unless he or she is the holder of a current certificate of registration issued by the Arkansas State Board of Sanitarians.

(b) A holder of a current certificate of registration may append to his or her name the letters "R.S."