Final answer:
A dialysis technician is certified to ensure competency in providing safe and effective dialysis treatments.
Step-by-step explanation:
A dialysis technician is to be certified for several reasons. First and foremost, certification ensures that the technician has completed the necessary training and education to perform the job competently. It also demonstrates their commitment to ongoing professional development and adherence to industry standards. Additionally, certification provides reassurance to patients and employers that the technician has the knowledge and skills required to provide safe and effective dialysis treatments.