Mail-In Audiometer Calibration for North Carolina Employers

Mail-in calibration for North Carolina employers

Foster Special Instruments calibrates audiometers at our bench at 6941 Cornell Road, Suite B, Blue Ash, Ohio 45242, near Cincinnati. You ship the unit to us, we calibrate it to ANSI S3.6, and it comes back to your North Carolina location with a calibration certificate for your hearing conservation file.

North Carolina packages travel to Cincinnati by ground carrier, and tracking lets you follow the unit both ways. We calibrate most major brands whether or not you bought from us, including Benson, Tremetrics, Maico, GSI, and Welch Allyn / Hill-Rom.

Who we serve in North Carolina

North Carolina's furniture and textile mills, pharmaceutical and biotech plants in the Triangle, and food and equipment manufacturers in the Piedmont all keep workers in hearing conservation programs. Hospitals and occupational health networks add many more audiometers to the mix.

We calibrate most major brands for these programs, whether or not the unit was bought from us.

OSHA and the audiometer in North Carolina

North Carolina operates its own state plan through the Occupational Safety and Health Division of NCDOL, the state Department of Labor. Federal 29 CFR 1910.95 is the common reference, and calibration to ANSI S3.6 is the benchmark that keeps your records consistent.

In North Carolina, as everywhere, OSHA 29 CFR 1910.95(h) ties audiometric testing to audiometers that meet ANSI S3.6. The work happens in layers, and each layer has an owner.

• Daily: your staff listens to the audiometer and tests a person with stable known thresholds. This is the employer's check.
• Annually: an acoustic calibration check. Our bench covers this.
• Every two years: an exhaustive calibration. We perform this as well.

29 CFR 1910.95(h), Appendix E

Packing and shipping your audiometer

Pack the audiometer in its original case or a padded box. Send the headphones, bone vibrator, and response switch that you use with it, because they are calibrated as a set. Include the serial number, your company name, a contact person, and the return address in North Carolina.

Use a tracked, insured label for the trip out of North Carolina. When the unit is back on your bench, the certificate lists the results, and a reminder goes out before the next due date.

On-site visits and booth testing in North Carolina

Because North Carolina is far from our Blue Ash shop, mail-in is the practical path for audiometer calibration.

If a booth in North Carolina also needs its noise levels measured, call us and we will talk through what a scheduled visit would involve.

A booth in North Carolina that is measured on site against ANSI S3.1 gets its result printed as the Room Acoustics Level Test section on the audiometer certificate.

Loaners and other instruments

If your audiometer needs an extensive repair, we lend you a free loaner so your testing keeps going. Programs in North Carolina often send other instruments with the audiometer, which saves a second shipment.

• Spirometers and the 3 L syringes used to check them.
• Breath alcohol testers. We calibrate them and train technicians. Foster does not sell or perform drug or alcohol testing.
• Vision testers.
• EKG machines.

North Carolina cities we hear from

Mail-in works from every part of North Carolina. Cities such as Charlotte, Raleigh, Greensboro, Durham, Winston-Salem, Fayetteville, High Point, Wilmington, Asheville, and Hickory are all reachable the same way, and so is any town not on this list. Call 513-891-0868 or see the main audiometer calibration page for the full service.