Annual Calibration Process for Hearing Screening Equipment - Minnesota Department of Health

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.

Vendor List

Name of Company Contact email / Telephone number
Midwest Special Instruments Corp
952-808-6354 or 800-328-6709

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

  • Educational Service Center
    School Board Meeting Room
    4855 Bloom Avenue
    White Bear Lake, MN 55110

  • Educational Service Center
    11200 93rd Avenue N, Room W41
    Maple Grove, MN 55369

Contact Vendor: Natus Medical (formerly Otometrics) for the following sites

  • Diamond Education Center
    200 West Burnsville Parkway Door #3 (Drop off in ISS Conference Room)
    Burnsville, MN 55337

  • Robbinsdale Area Schools
    4148 Winnetka Avenue North, Room 20
    New Hope, MN 55427

Contact Vendor: Midwest Special Instruments Corp. for the following sites

  • Edina Public Schools
    5701 Normandale Blvd.
    Edina, MN 55424

  • Rosemount School District #196
    3455 153rd Street W
    Rosemount, MN 55068

  • Wright County Health and Human Services
    1004 Commercial Drive
    Buffalo, MN 55313

  • Educational Service Center
    1350 West 106th Street
    Bloomington, MN 55431

  • Central Ed Campus
    410 Central Avenue N, Door 1
    New Prague, MN 56071

  • Shakopee Government Center
    200 4th Avenue W, Room GC102
    Shakopee, MN 55379
Updated Monday, 28-Jun-2021 14:45:51 CDT