Annual Calibration Process for Hearing Screening Equipment - Audiometers, Tympanometers, and Otoacoustic Emissions (OAE)
Annual calibration of hearing screening equipment is recommended by the U.S. Occupational Health and Safety Administration (OSHA), the National Institutes of Health (NIH) and the Minnesota Department of Health. Different factors such as age of the machine, frequency of use, exposure to extreme temperatures, and handling and storage of the machine can cause the instruments to become non-compliant to specifications set forth by the American National Standard Specification for Audiometers (ANSI). Annual calibration ensures the accuracy of the machine's readings.
Notice of discontinuation of calibration clinics for year 2022 and beyond
This will be the last year that MDH will provide a listing of vendor calibration clinics. Please plan for your future needs.
The list of vendors below will remain on this page through 2022 as a reference for you in making your plans.
Reach out to the appropriate vendor to schedule a time for an annual calibration. The sites are listed for a reference only if you are not sure what vendor to contact. Do not show up to the site.
For all counties except: Anoka, Carver, Dakota, Hennepin, Ramsey, Scott, and Washington
Contact Vendor: Midwest Special Instruments Corp
For: Anoka, Carver, Dakota, Hennepin, Ramsey, Scott, and Washington
Contact Vendor: Branson – Larkin Electronics for the following sites
Contact Vendor: Natus Medical (formerly Otometrics) for the following sites
Contact Vendor: Midwest Special Instruments Corp. for the following sites