Registers refreshed 2026-11-06.See refresh dates
ISO/IEC 17025 directory

Calibration Labs and Services

Labs whose accredited scope includes electrical, mass, temperature or pressure calibration. Calibration compares a measuring instrument with a reference of known accuracy and states the difference and its uncertainty. 336 accredited labs in 27 countries have electrical, mass, temperature or pressure calibration in their scope. Most of them are in United States, Canada and Japan. The most common standards in these scopes are ANSI/NCSL Z540-1-1994, ASTM E18 and ASTM E4.

Labs
336
Countries
27
Most common standard
ANSI/NCSL Z540-1-199443 labs

About Calibration

Instruments typically calibrated: multimeters, oscilloscopes, power supplies, electrical calibrators, balances, scales, weights, load cells, force machines, torque tools, thermometers, thermocouples, temperature baths, furnaces, climatic chambers, pressure gauges, pressure transducers, deadweight testers and vacuum gauges. Calibration of length and geometry instruments belongs to dimensional metrology.

Calibration labs by country

United States251 labs
Canada16 labs
Japan12 labs
Mexico11 labs
United Kingdom7 labs
Germany5 labs
France5 labs
Sweden4 labs
Peru3 labs
Saudi Arabia3 labs
China2 labs
India2 labs
Colombia1 lab
Dominican Republic1 lab
Ecuador1 lab
Hong Kong SAR China1 lab
Hungary1 lab
Italy1 lab
South Korea1 lab
Kuwait1 lab
Malaysia1 lab
Qatar1 lab
Singapore1 lab
Thailand1 lab
Taiwan1 lab
Vietnam1 lab
South Africa1 lab

Calibration labs by US state

Most common standards in electrical, mass, temperature or pressure calibration scopes

Labs with electrical, mass, temperature or pressure calibration in their scope

Qal-Tek Associates

Idaho Falls, ID, US

Scope

ASTM E4 using load cells Pressure3 – Measure Pneumatic Absolute Up to 300 psig Up to 775 mmHg 0.33 psig 3.8 mmHg Digital pressure tester Digital manometer Scales and Balances3 Up to 200

View lab

The EMC Shop

Rocklin , CA, US

Scope

CISPR 16-1-2, CISPR 22, IEC 61000-4-6 Network Analyzer ESD Current Targets – Resistance Insertion Loss Transfer Impedance <100 Ω 100 kHz to 4 GHz 1 A 0.06 Ω 0.65 dB 2.0 % IEC 61000-4-2

View lab

Advanced Calibration Technologies, dba Ad-Tek

Boring, OR, US

Scope

ASTM E145 PRT with indicator to ASTM & AASHTO specifications Relative Humidity3 – Measure (20 to 80) % RH @ 25 °C 0.32 % RH Digital hygrometer VIII. Time & Frequency Parameter/Equipment

View lab

G.T. Michelli Co., LLC - BENTON

Benton, AR, US

Scope

HB44 Note: Ranges above 10 001 lb are not covered in field footnote. ________________________________ 1 This laboratory offers commercial calibration service and field calibration service. 2 Calibration and Measurement C

View lab

Quality Testing Calibration (QTC)

Nicholasville, KY, US

Scope

AMS2750H VII. Time & Frequency Parameter/Equipment Range CMC2 (±) Comments Timer/Stopwatch (1 s to 1 hr) 1 s/hr. Reference stopwatch _______________________________ 1 This laboratory offers commerci

View lab

G.T. Michelli Co., LLC - SAVANNAH

Savannah, GA, US

Scope

IV. Thermodynamics Parameter/Equipment Range CMC2 (±) Comments Temperature – Measure & Measuring Equipment3 (0 to 150) °C 0.1 °C Thermoworks reference thermometer w/ cold or heat source

View lab

Fischer Custom Communications

Torrance, CA, US

Scope

FCC-TG 115A / EFT – Waveform Generator Functions Rise Time (s) Fall Time (s) Pulse Width (s) 10 GS/s 12 ps 80 ps 80 ps Tektronix DPO 7254, MIL-STD- 461 D, E, F, G GS/s: giga samples/ second ____

View lab

Calibration Technologies

Louisville, KY, US

Scope

Parameter/Range Frequency CMC2, 4 (±) Comments AC Voltage3 – Generate (cont) (1 to 33) mV (33 to 330) mV (0.33 to 3.3) V (3.3 to 33) V (33 to 330) V

View lab

Eddyfi Europe

Villebon Sur Yvette, FR

Scope

IV. Time & Frequency (Ultrasound Instrumentation – Dynaray Series) Parameter/Equipment Range CMC2, 4 (±) Comments Receiver – Ultrasound Instrumentation3 Frequency Response: Low Cutoff High Cutoff

View lab

Audio Precision Calibration Services

Beaverton, OR, US

Scope

A2LA Cert. No. 2527.01) 12/26/2024 Page 3 of 5 Parameter/Range Frequency CMC2, 3, 6 (±) Comments AC Voltage – Measure (12.000 to 32.999) mV (33.000 to 119.999) mV (120.00 to 329.99) mV (0.330 00 to 1.199 99)

View lab

BALANCE METROLOGIA S.A.S ZOMAC

Anserma Caldas, CO

Scope

V. Thermodynamics Parameter/Equipment Range CMC2, 4 (±) Comments Temperature3 – Indicator, Sensor Set. Digital Thermometers, Temperature Indicators with Thermocouple, Thermistor, & RTD Sensors. (0 to 100) °C

View lab

Labcal Solutions (PTY)

Kyalami, ZA

Scope

Parameter/Equipment Range CMC2 (±) Comments Mass Pieces 1 mg to 100 g (100 to 200) g (200 to 3000) g 0.06 mg 0.34 mg 0.16 g LCS20/040A IV. Thermodynamics Parameter/Equipment Range CMC2, 5 (±)

View lab

Alpha Technologies Services

Hudson, OH, US

Scope

ASTM D1646, D2084, D5289, D6204, D6601 with temperature probe & meter ITS 90, oil bath with SPRT & digital readout V. Time & Frequency Parameter/Equipment Range CMC2, 5 (±) Comments Dwell Time Up t

View lab

Magnetic Instrumentation

Indianapolis, IN, US

Scope

Parameter/Equipment Range CMC2, 3 (±) Comments DC Magnetic Flux – Fluxmeters (0 to 100) kMT (100 to 200) kMT (200 to 500) kMT (0.5 to 1) MMT (1 to 2) MMT (2 to 5) MMT (5 to 10) MMT (10 to 20) MMT (20 to 50)

View lab

Sistemas y Basculas de Mexico S.A. de

Cd. Juarez Chihuahua, MX

Scope

Parameter/Equipment Range CMC2 (±) Comments Floor Scales3 – Resolution: 0.01 lb 0.02 lb 0.05 lb 0.1 lb 0.2 lb 0.5 lb Up to 0.25 lb (> 0.25 to 25) lb (> 25 to 5

View lab

Applied Test Systems

Butler, PA, US

Scope

IV. Thermodynamics Parameter/Equipment Range CMC2, 6 (±) Comments Temperature3 – Measure (-40 to 180) °C (15 to 30) °C (59 to 86) °F 0.037 °C 0.35 °C 0.63 °F Digital monitor w/ platinum RT

View lab

Controls Service

Livonia , MI, US

Scope

AMS2750 and AIAG CQI-9, CQI-11, CQI- 12) Datalogger/recorder w/ SLE T/C’s Relative Humidity – Controllers, Indicators, Recorders, and Transmitters3 (11 to 90) % RH (90 to 95) % RH 1.7 % RH 2.4 % RH

View lab

MAC Calibrations

US

Scope

V. Thermodynamics Parameter/Equipment Range CMC2, 7 (±) Comments Temperature3 – Measure (-80 to 300) °C (-112 to 572) °F (10 to 257) °F (-11 to 121) °C 0.15 °C 0.25 °F 0.8 °F 0.4 °C Digital thermometer

View lab

Cal-Rite Corporation

Naperville, IL, US

Scope

ASTM E4 & ISO 7500-1 ASTM E4 within the Class A working range, ISO 7500-1 within the Class 0.5 or 1 working range Force3 – Measuring Equipment (Tension & Compression) Calibration by Deadweight with Local Gravity

View lab

Industronics Service Company

South Windsor, CT, US

Scope

AMS2750, universal calibrator & test thermocouples AMS2750, multi-point recorder & test thermocouples

View lab

CAL LAB LIMITED

Tsuen Wan, NT, HK

Scope

Parameter/Equipment Range CMC2, 5 (±) Comments Gas Detection Equipment – (cont) Oxygen Nitrogen Dioxide Ozone Sulfur Dioxide Formaldehyde Radon Dust Concentration TSP PM10 PM2

View lab

Applied Technical Services

Sacramento, CA, US

Scope

Parameter/Equipment Range CMC2, 4, 8 (±) Comments Temperature – Measure3 (-40 to 0) °C (>0 to 200) °C (>200 to 500) °C (>500 to 660) °C (>660 to 1200) °C 1.2 °C 0.31 % + 1.2 °C 0.16 % + 1.5 °C 0.44 % + 0.1

View lab

Zetec, Incorporated

Snoqualmie, WA, US

Scope

SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 ZETEC, INCORPORATED 8226 Bracken Place SE, Suite 100 Snoqualmie, WA 98065 James Larsen Phone: 425 974 2829 CALIBRATION Valid To: August 31, 2027 Certificate Number

View lab

MDI Calibration

Hialeah, FL, US

Scope

Parameter/Range Frequency CMC2, 3 (±) Comments AC Current – Measure (0.1 to 1) A (1 to 3) A 20 Hz to 1 kHz 40 Hz to 1 kHz 450 μA + 1.3 mA/A 3.5 mA + 4 mA/A Agilent 34401A III. Mechanical

View lab

Equipment Services Group

Ferndale, MI, US

Scope

ISO/IEC 17025:2017 & ANSI/NCSL Z540-1-1994 EQUIPMENT SERVICES GROUP, LLC 3269 Hilton Rd. Ferndale, MI 48220 Michael Macauley Phone: 248 227 5310 CALIBRATION Valid To: December 31, 2027 Certificate Number: 263

View lab

MRM Metrology

Brampton, CA

Scope

Parameter/Equipment Range CMC2 (±) Comments Hand Dynamometers Digital Hydraulic (Compression) Pinch Gauges (Compression) Up to 200 lbf Up to 200 lbf Up to 60 lbf 0.64 lbf 3.0 lbf 0.8

View lab

CALPELAB CIA LTDA

QUITO, EC

Scope

ISO 7500 Standard Load Cell, ISO 376 Class 00 Pressure – Gages, Sensors, Transmitters Pressure Relief Valve Setting Up to 0.69 MPa Up to 100 psi Up to 6.89 MPa Up to 100

View lab

HYDRO-CHART

TULSA, OK, US

Scope

II. Thermodynamics Parameter/Equipment Range CMC2, 5 (±) Comments Temperature – Measuring Instruments (40 to 120) °F 0.19 °F Digital thermometer with PRT ________________________________ 1 This laborator

View lab

Conrad Kacsik Instrument Systems

Solon, OH, US

Scope

ASTM E145 testing: Anemometer Digital survey recorder Stopwatch Digital survey recorder, T/C type J ½ special limits AMS-2750 testing: AMS-2750 uniformity Survey: digital survey recorder, T/C type K AMS 2750

View lab

Precision Balance Specialist

US

Scope

SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 PRECISION BALANCE SPECIALIST James R Padilla Phone: 909 200 8361 CALIBRATION Valid To: November 30, 2026 Certificate Number: 6573.01 In recognition of the succe

View lab

Certified Scale

Menomonee Falls, WI, US

Scope

ASTM E617 Class 2 standards ASTM E617 Class 2 standards and NIST H-105-1 Class F standards Scales3 – Class III Class IIIL Up to 5 lb (> 5 to 10) lb (> 10 to 20) lb (> 20 to 50) lb

View lab

G.T. Michelli Company, LLC - JACKSON

Jackson, MS, US

Scope

ASTM Class 5 (NIST Class F) weights Weight cart and weight blocks JAX, GWM, OBM, BIR, COL ___________________________ 1 This laboratory offers commercial calibration service and field calibration service. 2 Calib

View lab

Riverview Calibration Services,

Belpre, OH, US

Scope

ASTM E220-13a PRT, Hart 1502A GP probe type K Shielded probe type J Type “K” copper slug Type “K” ceramic beaded Type “J, K, T” data cable Forced Air Ovens3 – Temp Uniformity Chamber Dimensions Air

View lab

Skorchtek

Holland, MI, US

Scope

Parameter/Range Frequency CMC2, 3, 6 (±) Comments Frequency – Measure (Hz) (3 to 10) Hz (10 to 100) Hz (100 to 1000) Hz (1000 to 50 000) Hz 0.19 % 0.14 % 0.14 % 0.14 % Keysight 34465A Parameter/Equi

View lab

Certified Measurement Services

Pomona, CA, US

Scope

AMS 2750 standards Martel MC-1010, datalogger with/without thermocouple IV. Time & Frequency Parameter/Equipment Range CMC2, 5 (±) Comments Digital Stop Watches & Timers3 (3 t

View lab

Scientific Calibration

Cary, NC, US

Scope

Parameter/Equipment Range CMC2, 6 (±) Comments Scales, Balances & Weighing Systems3 (cont) 10 kg (>10 to 25) kg (>25 to 30) kg (>30 to 35) kg (>35 to 45) kg (>45 to 50) kg (>50 to 60) kg (>60 to 100) kg (>100 to 200) k

View lab

ALEPACK

Sandwich, MA, US

Scope

III. Thermodynamics Parameter/Equipment Range CMC2, 3 (±) Comments Temperature – Measure Up to 100.0 °C (100 to 260.0) °C 1.5 °C Fluke multimeter model IV. Time & Frequency Parameter/Equipment Range C

View lab

Cura Terrae OH and Emissions Testing

West Yorkshire, GB

Scope

BS EN ISO 16911-1:2013 (ETC-SE-24) - using differential pressure device (pitot tube) method Procedure to meet requirements of PD CEN TR 17078:2017 Measurement Objectives 1, 2 and 3 B Carbon monoxide IS EN 15058:2017 (ETC-SE-

View lab

Atlas Material Testing Technology

Mount Prospect, IL, US

Scope

II. Thermodynamics _________________ 1 This laboratory offers commercial calibration service. 2 Calibration and Measurement Capability Uncertainty (CMC) is the smallest uncertainty of measurement that a laboratory can achieve wit

View lab

Eddyfi Canada

Quebec, CA

Scope

SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 EDDYFI CANADA INC. 3425 Pierre-Ardouin St Quebec, QC, CANADA G1P 0B3 Ghislain Cournoyer, Quality Assurance Director Phone: 418 263 3686 CALIBRATION Valid To: Aug

View lab

INSCO, Instrumentation Services

San Juan, US

Scope

SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 INSCO, INSTRUMENTATION SERVICES INC. 279 Pinero Ave, Rio Piedras, Puerto Rico 00927 Denio Hernandez Phone: 787 765 5564 CALIBRATION Valid To: December 31, 2027 C

View lab

American Scale & Equipment

Baltimore, MD, US

Scope

OIML R111-1 6 This scope meets A2LA’s P112 Flexible Scope Policy.

View lab

SOCOTEC UK

Staffordshire, GB

Scope

ISO/IEC 17025:2017 Schedule of Accreditation issued by United Kingdom Accreditation Service 2 Pine Trees, Chertsey Lane, Staines-upon-Thames, TW18 3HR, UK SOCOTEC UK Limited Issue No: 144 Issue date: 30 October 2025 Testin

View lab

PAZ LABORATORIOS

Arequipa, PE

Scope

INDECOPI PC-011 calibration procedure for non-automatic Class I & II balances. Fourth edition 2010 with OIML class E2, F1 reference weights

View lab

JAS METROLOGY S.A.C

Lima, PE

Scope

IV. Thermodynamics Parameter/Equipment Range CMC2, 4 (±) Comments Temperature – Measuring Equipment3 (-30 to 250) °C (-30 to 250) °C (100 to 180) °C 0.037 °C 0.051 °C

View lab

Yadav Measurements Private

India, IN

Scope

EN 16314:2013 Expected lifetime Security Software, data and hardware security Firmware upgrade Software identification Power system Display Diagnostics Metrological influence AFD connections Input to AFD & Output from AFD Dat

View lab

ICL Calibration Laboratories, Inc.

Stuart, FL, US

Scope

III. Thermodynamics Parameter/Equipment Range CMC2 (±) Comments Temperature – Digital Thermometers, PRTs, RTDs, Thermistors, Thermocouples, Liquid-in-Glass Thermometers, Temperature Recorders and Loggers Fluke 159

View lab

G.T. Michelli Company, LLC - SEMMES

Semmes, AL, US

Scope

ASTM Class 6) NIST Class F (ASTM Class 6) NIST Class F (ASTM Class 6) NIST Class F (ASTM Class 6) NIST Class F (ASTM Class 6) Weight cart & weight blocks (Applied load) Torque – Hand Tool3

View lab

G.T. Michelli Co., LLC - AUGUSTA

Augusta, GA, US

Scope

NIST HB 44 NIST HB 105-1 _____________________ 1 This laboratory offers commercial calibration service and field calibration service. 2 Calibration and Measurement Capability Uncertainty (CMC) is the smallest uncert

View lab

Aldinger Company dba Servo Innovations

Wayland, MI, US

Scope

(A2LA Cert No. 2444.01) 03/19/2025 Page 4 of 4 V. Thermodynamics Parameter/Equipment Range CMC2 (±) Comments Temperature3 – Thermocouple Simulation B, E, J, K, N, R, S, T (-10 to 122) °C 0.42

View lab

Showing labs 201–250 of 336.

Each lab page shows which of its certificates are active.

Materials these labs test

Related pages