InstroTek, Inc.

Research Triangle Park, NC

Corporate Headquarters

1 Triangle Drive, PO Box 13944, NC 27709
Phone : (919) 875-8371
Fax: (919) 875-8328

Raleigh, NC serves as the corporate headquarters, east coast service center and manufacturing hub for all of the InstroTek branch offices.

Always Competitive Pricing and Fast Turnaround from the Leaders in Nuclear Gauge Service and Calibration!

Our People

Johnny Williams, InstroTek’s Service Manager, has been with the company for 15 years. He has over a decade of experience with the NCAT ovens, forced air ovens and gyratories and had previously worked at Troxler for 17 years. His expertise extends past calibration, final assembly and repair. He has over 5 years of experience in sales support and customer service.

Kerry DuBiel served in the U.S Army as an Apache helicopter mechanic and achieved the rank of Sergeant. His military service included two tours to Afghanistan and Iraq, during this time he received numerous medals for his valiant service. Kerry is a proud North Carolina native and has been with InstroTek 3 years as nuclear gauge product technician.  He helps manufacture of the Xplorer 3500, ValiDator and MC Elite gauges.



Our Service


Full 3 and 5 Block Calibration
Using NIST traceable calibration blocks and meeting ASTM D6938, D2950, D7013 and AASHTO T310 requirements for Nuclear Gauge Calibration and Verification.

Cleaning and Lubrication
Cleaning and lubricating all mechanical components for optimal performance under any condition.

Extended Electronic Inspection
Inspection of all electronic components using the most up to date electronic testing equipment.

Full Mechanical Inspection
Mechanical components are inspected to ensure proper operations on the field.

Detector Signal Adjustment
The detector signals are adjusted for any change that has occurred over time.

Top Bumper and Scraper Ring Included
Due to normal wear, the scraper ring and top cap bumper will require replacement for proper performance. These parts are always included with a full calibration and service at no extra cost.



Our Promise


No Hidden Costs!
At InstroTek, you will be charged only for basic service and calibration. If your gauge requires any repairs, you will be contacted first and with your consent the repairs will be done using the highest quality parts at the lowest cost to you.

Superior Technical Service!
At InstroTek, only the most qualified factory trained technicians will be servicing and calibrating your nuclear gauges.

A Friendly Representative Every Time You Call!
You don’t have to talk to an answering service or recorded message! InstroTek, will always have a qualified and friendly voice on the telephone to answer your questions.

Fast Turnaround
InstroTek has always been the leader in fast turnaround times. We know that the sooner you receive your gauge back from us, the sooner you can utilize your gauge out in the field.


IMPORTANT Information About Servicing Your Troxler 3400 Gauges:

North Carolina Department of Health and Human Services Information Notice


InstroTek, Inc. - Research Triangle Park, NC is an accredited ISO 17025 laboratory 

1 Triangle Drive, PO Box 13944, Research Triangle Park, NC 27709

(919) 875-8371