In-Lab & Onsite Calibration Services in Seattle, WA
With over 35 years of experience, our technicians have provided precise calibration, instrument repair, and metrology database management to a diverse range of industries across the Seattle area.
Located in Gaithersburg, MD, our calibration laboratory—accredited to ISO/IEC 17025:2017, ANSI Z540-1, and Z540.3 standards—adheres to strict quality protocols. We perform all calibrations and repairs in line with manufacturer specifications to ensure your measurement tools remain reliable, repeatable, and audit-ready. Each calibration is accompanied by a certificate that confirms compliance with the rigorous standards set by the National Institute of Standards and Technology (NIST).
Serving Seattle, WA
Seattle anchors the Puget Sound region, spread across King, Snohomish, Pierce, and Kitsap counties and connected by Interstate 5, Interstate 90, and State Routes 99, 167, and 520. It is one of the country’s premier aerospace, technology, and maritime hubs — home to Boeing’s Everett and Renton production lines, the software and cloud engineering campuses of Microsoft and Amazon, University of Washington research programs, a deep biotech and life-sciences cluster, and extensive Navy and maritime operations across Puget Sound. Tra-Cal supports these operations with ANAB-accredited ISO/IEC 17025:2017 calibration of test, measurement, and laboratory equipment.
Because the Puget Sound region sits outside our Mid-Atlantic pickup radius, we serve King, Snohomish, Pierce, and Kitsap county facilities through two intake paths: prepaid ship-in calibration with a typical five-business-day turnaround, and onsite calibration appointments at your facility. Each calibration is performed against documented procedures, traced through NIST, and accompanied by an audit-ready certificate that supports AS9100, ISO 13485, ISO 9001, and FDA 21 CFR Part 820 quality systems.
Why Quality Teams in Seattle Choose Tra-Cal
5-Day Turnaround
Prepaid Ship-In and Return Shipping
Onsite Calibration at Your Facility
Comprehensive Asset Database Management
Dedicated Account Managers
Veteran-Owned & Operated
Unwavering Quality Guarantee
Calibration Services Available to Seattle, WA Operations
Additional Calibration Options
How Tra-Cal Serves Seattle, WA
In-Lab Calibration:
Send your equipment to our ANAB-accredited ISO/IEC 17025:2017 laboratory with prepaid inbound and return shipping. Calibration is performed in a climate-controlled environment against documented procedures, with traceability through NIST. Standard turnaround is approximately five business days from receipt, and asset records are retained with automated due-date notifications.
Onsite Calibration:
Our metrologists travel to Seattle-area facilities for fixed assets, large inventories, and instruments that should not be moved. Calibration is performed in a controlled environment at your site on a scheduled appointment, with the same accreditation, NIST traceability, and documentation as in-lab service.
Frequently Asked Questions
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Yes. Tra-Cal serves Seattle and the greater Puget Sound region through two intake paths: prepaid ship-in service with a typical five-business-day turnaround, and onsite calibration appointments at your facility. The same ISO/IEC 17025:2017 accreditation, NIST-traceable standards, and audit-ready certificates apply regardless of intake method.
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Yes. Tra-Cal maintains ISO/IEC 17025:2017 accreditation. ANSI/NCSL Z540-1 and Z540.3 conformance is also available. The current scope of accreditation is published on the Tra-Cal Certificate of Accreditation page.
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Standard turnaround for in-lab calibration is approximately five business days from receipt of the instrument. Expedited turnaround is available on request and depends on instrument type, parameter scope, and current lab volume.
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Yes. Each calibration certificate documents traceability through NIST, includes as-found and as-left data where applicable, lists the standards used, the calibration procedure reference, environmental conditions, and the technician. Certificates are designed to support AS9100, ISO 13485, ISO 9001, and FDA 21 CFR Part 820 quality system audits.
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Tra-Cal supports aerospace and defense manufacturers, technology and cloud-hardware teams, precision electronics and RF systems, medical device and life-sciences companies, University of Washington research groups, and maritime and Navy operations across Bellevue, Everett, Redmond, Renton, Kent, Tacoma, and communities throughout King, Snohomish, Pierce, and Kitsap counties.
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Yes. Onsite calibration is available for fixed assets, large inventories, and instruments that should not be transported. A scheduled appointment is set with your team, and the calibration is performed in a controlled environment at your facility with full documentation.
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A packaging guide is provided when you request a quote. In general, instruments should be powered down, accessories included where required for calibration, and packed with appropriate cushioning. A prepaid shipping label is available for qualifying customers.
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Yes. Tra-Cal offers metrology database management with automated due-date notifications, historical certificate retrieval, and asset-level records suitable for audit support.
Visit Our Gaithersburg Facility or Find Us Near You
Tra-Cal
Lab
8577 Atlas Drive
Gaithersburg, MD 20877
Servicing Local Seattle Zip Codes:
98101, 98118, and nearby King, Snohomish, and Pierce county ZIP codes including 98004, 98052, 98032, 98188, and 98402.
Contact Tra-Cal for Calibration Support Today
Tell us your instrument list, required turnaround, and accreditation level. Most quote requests are returned within one business day. Tra-Cal supports quality, engineering, and operations teams across Bellevue, Everett, Redmond, Renton, Kent, Tacoma, and communities throughout King, Snohomish, Pierce, and Kitsap counties with ANAB-accredited ISO/IEC 17025:2017, NIST-traceable calibration. Call 301-527-9200 or request a free quote online.