FindTestingLabs

Registers refreshed 2026-10-25.See refresh dates

ISO/IEC 17025 directory

Accredited testing labs in California

182 labs on ISO/IEC 17025 registers in California, in 102 cities, 179 of them with active accreditation. 179 hold an active A2LA accreditation. Cities with the most labs: San Diego (12), Irvine (8), Santa Clara (7). Accredited methods held by the most labs: ANSI/NCSL Z540-1-1994 (25), FCC PART 15 (13), IEC 61000-3-2 (13).

Labs: 182
Active ISO/IEC 17025: 179
Active A2LA: 179
Cities: 102
Register refreshed: 2026-10-23

Labs in California

City

49er Water Laboratory

Jackson

A.COM Electronic Measurement Technologies

Santa Clara

Advance Mycotoxin

Wasco

Advanced Test Equipment

San Diego

AEMTEK

Fremont

AEMTEK

Modesto

AEMTEK Salinas

Salinas

Agate Technology

Temecula

Agriculture & Priority Pollutants

Clovis

Ajwa Analytical Laboratories, LLC

Gilroy

Alkemist

Garden Grove

ALS Group USA,

Torrance

Amsler Testing

Rancho Palos Verdes

AmSpec

Concord

AmSpec

Signal Hill

Anachem Laboratories LLC

El Segundo

Analytical Chemists

San Diego

Anko Electronics

Anaheim

Anritsu Americas Sales Company

Morgan Hill

Anritsu AUS, California

Morgan Hill

Applied Technical Services

Sacramento

Architectural Testing, Inc. (An Intertek Company)- Fresno

Fresno

Architectural Testing, Inc. (An Intertek Company)- Lake Forest

Lake Forest

ATLAS Compliance & Engineering

San Jose

Baker Wine & Grape Analysis

Paso Robles

Balazs NanoAnalysis

Fremont

Bay Area Compliance

Sunnyvale

Bureau of Household Goods and Services

Sacramento

Bureau Veritas Commodities and Trade

Martinez

Bureau Veritas Commodities and Trade

Torrance

Bureau Veritas Consumer Products Services

Sunnyvale

C&C Irradiator Service

Foster City

Cal-Cert Company

Anaheim Hills

Cal-Labs

La Mirada

Calcoast-ITL

San Leandro

California Seed and Plant

Pleasant Grove

Center For Analytical Chemistry California Department of Food and Agriculture

Sacramento

Certified Laboratories

Burbank

Certified Laboratories

Turlock

Certified Laboratories

Tustin

Certified Measurement Services

Pomona

CETECOM

Milpitas

CKC Certification Services

Mariposa

CMM Technology

San Clemente

DDL, Inc. - DDL CA

Irvine

Defense MicroElectronics Activity - Science & Engineering Gamma Irradiation Test Facility

McClellan

Deibel Labs of Manteca CA

Manteca

Dellavalle Laboratory, Inc.

Fresno

Dickson Testing Company

South Gate

E-TECH Testing Services

Rocklin

Element Huntington Beach

Huntington Beach

Element Los Angeles

Duarte

Element Materials Technology

Concord

Element Materials Technology Anaheim

Anaheim

Element Materials Technology Fremont Newark

Fremont

Element Materials Technology Irvine

Irvine

Element Materials Technology LAX

Los Angeles

Element Materials Technology Pharma US LLC.

Santa Fe Springs

Element Materials Technology San Bernardino

San Bernardino

Element Materials Technology San Jose, CA

San Jose

Element U.S. Space & Defense

Fullerton

Element U.S. Space & Defense

Santa Clarita

EMC Tempest Engineering

Anaheim

EMSL Analytical

San Diego

Enthalpy Analytical

El Dorado Hills

EOM Test

Monterey Park

ETS Laboratories

Healdsburg

ETS Laboratories

Oakville

ETS Laboratories

Paso Robles

ETS Laboratories

St. Helena

Eurofins Botanical Testing, US

Brea

Eurofins Calscience

Tustin

Eurofins DQCI

Fresno

Eurofins EAG Engineering Science

Irvine

Eurofins EAG Engineering Science

Santa Clara

Eurofins EAG Materials Science - CA

Sunnyvale

EUROFINS EATON ANALYTICAL

Pomona

EUROFINS ELECTRICAL AND ELECTRONIC TESTING NA

Irvine

EUROFINS ELECTRICAL AND ELECTRONIC TESTING NA

Santa Clara

Eurofins Infinity Laboratory Group

San Jose

Eurofins Microbiology Laboratories, Inc. - Los Angeles

Tustin

Eurofins Microbiology Laboratories, LLC.

Salinas

Eurofins Nanolab Technologies

Milpitas

Eurofins Rapid Microbiology Laboratories, LLC - Fresno

Fresno

Eurofins S-F Analytical

Tustin

Expedite Testing Service Corporation

Lakeside

Eydle

Pasadena

Fischer Custom Communications

Torrance

Flagship Lab Services

San Diego

Food Safety Net Services, L.P.

Fresno

Food Safety Net Services, LP

Commerce

Food Service Technology Center

Pleasanton

Fred V. Fowler Company LLC DBA Anko Electronics Test & Measurement

Vista

Fulgent Therapeutics

El Monte

G.T. MICHELLI CO., LLC - Goleta

Goleta

G.T. MICHELLI CO., LLC - SANTA FE SPRINGS

Santa Fe Springs

G.T. MICHELLI CO., LLC - STOCKTON

Stockton

Gare Hi Technology

San Diego

Genomic Health

Redwood City

GL Technologies

San Diego

Harrens Lab Inc.

Hayward

HCT America

Milpitas

Helium Leak Testing, Inc.

Simi Valley

ICC Evaluation Service, LLC.

Brea

IDEXX Distribution, Inc. DBA IDEXX Reference

West Sacramento

IIA LAB SERVICES - IRVINE

Irvine

Independent Testing

Costa Mesa

Innovatical Laboratories, LLC

Montclair

InstruVU

Simi Valley

International Process Solutions

San Carlos

Intertek Testing Services NA

Lake Forest

Intertek Testing Services NA

Menlo Park

K-Light Laboratories Corp.

Irwindale

LA Testing (EMSL Analytical, Inc)

South Pasadena

Landau Laboratories, Inc.

Cathedral City

MATPHIL TECHNOLOGIES, INC. DBA ACCUTEK

San Diego

MGA Research Corporation

Hughson

Michelson Laboratories of Northern California

Manteca

Michelson Laboratories, Inc.

Commerce

MiCOM

Pleasanton

Micro Precision Calibration

San Diego

Micro Quality Calibration

Chatsworth

MicroTest Laboratories Inc.

Rancho Cordova

Modern Olives Laboratory Services

Woodland

Molecular BioProducts d.b.a. Unity Lab Services

Carlsbad

Monster Energy

Corona

Nemko North America

Carlsbad

Pace Analytical Services, LLC - Huntington Beach

Huntington Beach

Pacific BioLabs

Hercules

Pacific Calibration Service

Campbell

Parametric

Anaheim

Plastics Analytical

Santa Ana

PME Services

Orange

Positive Lab Service

Los Angeles

Precision Geosynthetic Laboratories International, Inc. DBA TRI Environmental

Anaheim

Primary Instruments

Chatsworth

Primus Group Inc. dba PrimusLabs

Santa Maria

Pure Gold Forensics

Redlands

Purity Medical

Irvine

PVEL

Napa

Quanta Laboratories

Santa Clara

R&D Calibrations, Inc. DBA: Opto-Cal

Lakeside

RETC (Renewable Energy Test Center)

Fremont

RF Exposure

San Marcos

Rice Lake Weighing Systems (Formerly Heusser Neweigh)

Concord

RSA Industries Inc dba American Gage

Placentia

Safe Food Alliance - A Division of DFA of California

Kingsburg

SALUS ENGINEERING INTERNATIONAL

Santa Clara

SGS North America

San Diego

SGS North America, Inc Carson

Carson

SGS North America, Inc. - Silicon Valley

Milpitas

Silliker, Inc. dba Merieux NutriSciences Cypress

Cypress

Silliker, Inc. dba Merieux NutriSciences Salida

Salida

Silliker, Inc. dba Merieux NutriSciences Sunrise Laboratories, LLC.

Visalia

SIMCO Electronics - Los Angeles

Panorama City

SIMCO Electronics - San Diego

San Diego

SIMCO Electronics - Silicon Valley

Santa Clara

Snell Foundation - California Lab / STL / SMF

North Highlands

Spektra Labs by APS Dynamics

San Juan Capistrano

Sporton International (USA)

Milpitas

Starrett Kinemetric Engineering

Laguna Hills

Tentamus California

Irvine

The EMC Shop

Rocklin

The Lab-Materials Testing

Rancho Cucamonga

TJ/H2B Analytical Services

Sacramento

Trescal, Inc. - Pleasanton, CA

Pleasanton

Trescal, Inc. - Silicon Valley, CA

San Jose

TUV Rheinland of North America

Pleasanton

TUV SUD America

San Diego

UCLA Olympic Analytical

Los Angeles

UL Verification Services

Fremont

usCalibration

Irvine

Valley Calibration Services

Union City

Vertical Laboratories

Glendale

Vista Laboratories, Inc.

San Clemente

VSOL Group

Camarillo

WESTPAK

San Diego

WESTPAK

San Jose

WESTPAK

Union City

Canyon

Vista

No active ISO/IEC 17025 accreditation

EMSL Analytical

Santa Clara

No active ISO/IEC 17025 accreditation

Pace Analytical Services, LLC - El Monte

El Monte

No active ISO/IEC 17025 accreditation

Cities

Accredited methods

ANSI/NCSL Z540-1-199425 labs FCC PART 1513 labs IEC 61000-3-213 labs IEC 61000-3-313 labs IEC 61000-4-213 labs IEC 60601-1-212 labs IEC 61000-4-612 labs EN 5501111 labs EN 5503211 labs EN 6231110 labs

Neighbouring states

All accredited testing labs in the United States →

Need a test done in California? Start with one message.

Free, no obligation, and a written answer from the people who maintain this directory.

Get quotes from labs