Your Trusted Dosimeter Calibration Provider
Micro Precision is a trusted dosimeter calibration provider because its laboratories hold ISO/IEC 17025:2017 accreditation and issue NIST-traceable certificates of calibration for every radiation instrument serviced. Micro Precision’s ISO/IEC 17025:2017 accredited laboratories issue NIST-traceable certificates of calibration for dosimeters used across medical, industrial, defense, and research settings, supported by a global network of more than 50 calibration laboratories.
Our metrologists work with a variety of radiation dosimetry instruments, including electronic personal dosimeters, direct-reading dosimeters, and universal dosemeter and electrometer systems from manufacturers such as Dosimeter Corp (DCA), PTW Freiburg, and Fluke Biomedical / RaySafe. Compliance officers rely on our documented traceability records for regulatory review, while quality managers benefit from a single accredited vendor supporting their entire radiation instrument fleet.
Why Dosimeter Calibration Matters
Dosimeter calibration matters because inaccurate radiation dose readings create safety risks for personnel and compliance gaps for the facilities responsible for monitoring them. An uncalibrated dosimeter can under-report or over-report exposure without any visible indication, which is why documented, standards-based calibration is a regulatory requirement rather than a best practice.
Calibration practices connect directly to ANSI N13.5, NRC Regulatory Guide 8.4, and ANSI/NCSL Z540.3 requirements for radiation protection instruments. Compliance officers need a defensible audit trail linking every dose reading back to a NIST-traceable reference source, and quality managers need documentation that satisfies ISO/IEC 17025:2017 and facility radiation safety programs. Procurement teams benefit from working with a single accredited vendor rather than managing multiple uncertified calibration sources.
Ensure Accurate Dosimeter Calibration
Ensuring accurate dosimeter calibration services means following a documented process from intake through return. Micro Precision receives each dosimeter, inspects it for physical damage, exposes it to a known NIST-traceable radiation dose from a calibrated source, adjusts or documents any deviation, and issues a full certificate of calibration before returning the instrument.
Every calibration is performed under controlled laboratory conditions by trained metrologists, with results recorded for full traceability. Micro Precision offers standard turnaround as well as faster service options for dosimeters needed back in service quickly, without compromising the accuracy of the calibration process.
Our Calibration Options
Micro Precision offers both in-lab and on-site dosimeter calibration options to match your facility’s radiation safety program. In-lab calibration ships your dosimeter to one of our ISO/IEC 17025:2017 accredited laboratories for calibration under fully controlled reference-source conditions. On-site calibration sends a qualified technician to your facility, minimizing downtime for radiation instruments that are difficult to remove from active monitoring programs.
Faster turnaround options are available for time-sensitive calibration needs, in addition to our standard service timeline. Whether calibrating a single dosimeter or an entire fleet of radiation monitoring instruments, Micro Precision structures the service around your facility’s compliance schedule.
Dosimeters We Calibrate
Micro Precision calibrates a variety of radiation dosimetry instrument types, including instruments from leading manufacturers.
- Electronic personal dosimeters (EPDs)
- Direct-reading dosimeters (DRDs)
- Thermoluminescent dosimeters (TLDs)
- Ionization chamber survey meters
- Universal dosemeter / electrometer systems
- Radiation area monitors
- X-ray and diagnostic radiation dosimeters
- Dosimeter readout and calibration systems
Micro Precision calibrates instruments from manufacturers including Dosimeter Corp (DCA), PTW Freiburg, and Fluke Biomedical / RaySafe. If your specific dosimeter model is not listed, it is likely supported. Contact Micro Precision to confirm calibration availability for your instrument.
Looking for noise dosimeter calibration instead? See our sound level meter and noise dosimeter calibration services.
Calibration Service Levels Offered
Micro Precision offers three dosimeter calibration service levels so compliance officers and quality managers can match documentation depth to program requirements.
| Type of Service | Traceable | Traceable with Data | Accredited (ISO:IEC 17025:2017, Z540.3) |
|---|---|---|---|
| Calibrated to manufacturers specifications traceable to SI Units | |||
| ISO 9000 Compliant | |||
| Calibration certificates, data, maintained on secure web based tool (CDM) | |||
| Detailed calibration certificates and calibration stickers | |||
| Instrument adjustment (if found out of tolerance) | |||
| ANSI/NCSL Z540-1 compliant | |||
| Calibration Data | |||
| Logo from Accreditation body, Expanded Measurement Uncertainty | |||
| ANSI/NCSL Z540.3 compliant |
Dosimeter Calibration Services
Micro Precision delivers ISO/IEC 17025:2017 accredited, NIST-traceable dosimeter calibration services for electronic, direct-reading, and survey meter radiation instruments across a global network of more than 50 calibration laboratories. Compliance officers, quality managers, and radiation safety teams rely on Micro Precision for documented traceability, in-lab and on-site service options, and a single accredited vendor for their entire dosimeter fleet. Request a calibration quote to get started.
Please complete our quick Dosimeter calibration & repair service request form, and a Micro Precision representative will reach out to you same-day during office hours, or within one business day after office hours. (Mon – Friday 8AM – 4PM PST)
Dosimeter Service
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Frequently Asked Questions
Micro Precision calibrates a radiation dosimeter by exposing it to a known, NIST-traceable radiation dose from a calibrated source and comparing the instrument’s reading to the reference value. Results are documented across the dosimeter’s measurement range, and a certificate of calibration confirming traceability to NIST is issued with every instrument returned.
Radiation dosimeters typically require calibration at least once a year, consistent with guidance in ANSI N13.5 and NRC Regulatory Guide 8.4. Micro Precision recommends setting the interval based on usage frequency, environmental exposure conditions, and the facility’s internal radiation safety program.
Dosimeter calibration is governed by ANSI N13.5 and NRC Regulatory Guide 8.4 for radiation protection instruments, performed under ISO/IEC 17025:2017 accreditation with NIST-traceable reference sources. Micro Precision’s calibration process aligns with ANSI/NCSL Z540.3 requirements for measuring and test equipment.
A dosimeter measures cumulative radiation dose received by an individual over time, while a survey meter measures the radiation dose rate present in an area at a given moment. Micro Precision calibrates both instrument types, using the appropriate NIST-traceable reference source and procedure for each.
A NIST-traceable dosimeter calibration certificate is documentation confirming the instrument’s measured response was verified against a radiation reference standard linked to national measurement standards. Micro Precision’s certificates confirm ISO/IEC 17025:2017 compliance and provide the traceability records compliance officers need for regulatory review.
Electronic personal dosimeters, direct-reading dosimeters, thermoluminescent dosimeters, and ionization chamber survey meters all require regular calibration to maintain measurement accuracy. Micro Precision calibrates a variety of these radiation dosimetry instrument types across its accredited laboratory network.
Micro Precision provides on-site dosimeter calibration for facilities that cannot remove radiation instruments from service, in addition to in-lab calibration at its ISO/IEC 17025:2017 accredited laboratories. Both options include a NIST-traceable certificate of calibration upon completion.