The Kowalski Calibration CERTIFIED DEVICE sticker is more than just a date sticker. It represents a 26+ year dedication to maintaining safe and effective equipment. It represents an understanding of our role in the patient care circle, a role we accept and take very seriously. All devices displaying our sticker have been thoroughly tested and are operating as originally designed. Coupled with our detailed CLINICAL SAFETY REPORT AND CERTIFICATE OF CALIBRATION, clinicians have no doubt as to the efficacy of their modalities.