169 laboratories in United States are accredited by A2LA under ISO/IEC 17025 to perform ANSI/NCSL Z540-1-1994 testing. These labs commonly handle pH buffer solutions matrices. Most frequently tested analytes via this method in United States: Ph, Dc Voltage, Conductivity. From the accredited scope text: “ANSI/NCSL Z540-1-1994 GL TECHNOLOGIES LLC 6361 Nancy Ridge Dr. San Diego, CA 92121 C. J. Langner Phone: 858 202 1408 CALIBRATION Valid To: October 31, 2026 Certificate Number: 3364.01 In recognition o” “ANSI/NCSL Z540-1-1994 AALFA - KAL METROLOGY LABORATORY, DIVISION of AALBORG INSTRUMENTS & CONTROLS, INC. 20 Corporate Dr. Orangeburg, NY 10962 Agnieszka Malolepszy Phone: 845 770 3000 CALIBRATION Vali” “ANSI/NCSL Z540-1-1994 K-LIGHT LABORATORIES CORP. 15705 Arrow Highway Suite #3 Irwindale, CA 91706 Juan Mendez Phone: 626 960 0400 CALIBRATION Valid To: December 31, 2026 Certificate Number: 3415.01 In” “ANSI/NCSL Z540-1-1994 FLUKE CALIBRATION, PHOENIX – PRIMARY PRESSURE AND FLOW LABORATORY 4765 East Beautiful Lane Phoenix, AZ 85044 Tim Mueller Phone: 877 355 3225 CALIBRATION Valid To: March 31, 2027”
Beaverton, OR, US
ANSI/NCSL Z540-1-1994 G.T. MICHELLI CO., LLC 7933 Nimbus #28 Beaverton, OR 97008 Michael Howard Phone: 800-903-8823 CALIBRATION Valid To: December 31, 2026 Certificate Number: 3601.12 In recognition of th
Nunn, CO, US
ANSI/NCSL Z540-1-1994 COLORADO ENGINEERING EXPERIMENT STATION, INC. 54043 County Rd 37 Nunn, CO 80648 John Reiner Phone: 970-897-2711 CALIBRATION Valid To: January 31, 2028 Certificate Number: 5717.01 In r
Mulvane, KS, US
ANSI/NCSL Z540-1-1994 LEDFORD GAGE LAB, INC. 227 Industrial Dr. Mulvane, KS 67110 Blaine Johnson Phone: 316 777 9300 CALIBRATION Valid To: December 31, 2027 Certificate Number: 1560.01 In recogni
Chicago, IL, US
ANSI/NCSL Z540-1-1994 JLW INSTRUMENTS, INC 14 N. Peoria Street, Suite B101 Chicago, IL 60607 Linda Center Phone: 312 666 0595 CALIBRATION Valid To: May 31, 2027 Certificate Number: 1753.01 In recognition
Seattle, WA, US
ANSI/NCSL Z540-1-1994 THERMETRICS 4220 24th Avenue W Seattle, WA 98199 Adam Jones Phone: 206 456 9119 CALIBRATION Valid To: June 30, 2026 Certificate Number: 3984.01 In recognition of the successful complet
Coatesville, PA, US
Accredited Laboratory A2LA has accredited CONSTELLATION POWERLABS Coatesville, PA for technical competence in the field of Calibration This laboratory is accredited in accordance with the recognized International Standard ISO/IE
Suites A - F Frederick, MD, US
ANSI/NCSL Z540-1-1994 ELECTRICAL TEST INSTRUMENTS, LLC 8430 Spires Way, Suites A - F Frederick, MD 21701 Jonathan Blanchard Phone: 410 857 1880 CALIBRATION Valid To: August 31, 2026 Certificate Number: 5636.01
Springboro, OH, US
Accredited Laboratory A2LA has accredited WESTERN ENVIRONMENTAL A DIVISION OF CONTROLLED ENVIRONMENTAL SYSTEMS (CES) Springboro, OH for technical competence in the field of Calibration This laboratory is accredited in accordanc
Danville, VA, US
ANSI/NCSL Z540-1-1994 MSI-VIKING GAGE, LLC 112 Maplewood Street Danville, VA 24540 Beth Goins Phone: 434 836 4243 CALIBRATION Valid To: June 30, 2026 Certificate Number: 2200.01 In recognition of the succe
San Diego, CA, US
ANSI/NCSL Z540-1-1994 FLAGSHIP LAB SERVICES 6675 Mesa Ridge Rd, Suite 200 San Diego, CA 92121 Michael Park Phone: 800 274 0287 CALIBRATION Valid To: March 31, 2026 Certificate Number: 2901.01 In recognition
Savannah, GA, US
ANSI/NCSL Z540-1-1994 G.T. Michelli Co., LLC 218 Bourne Blvd, Suite G Savannah, GA 31408 Dave Fenocchi Phone: 706 855 1111 CALIBRATION Valid To: March 31, 2027 Certificate Number: 3601.09 In recognition
Rocklin, CA, US
ANSI/NCSL Z540-1-1994 THE EMC SHOP 3830 Atherton Rd. Rocklin, CA 95765 Caleb Crites Phone: 808 797 9735 CALIBRATION Valid To: January 31, 2028 Certificate Number: 5518.01 In recognition of the successful co
Bossier City, LA, US
ANSI/NCSL Z540-1-1994 G.T. MICHELLI COMPANY, LLC 4711 Viking Drive Bossier City, LA 71111 Dave Fenocchi Phone: 318-747-9730 CALIBRATION Valid To: November 30, 2026 Certificate Number: 3601.02 In recognit
Plattsburgh, NY, US
ANSI/NCSL Z540-1-1994 & ANSI/NCSL Z540.3-2006 CONSTELLATION POWERLABS – NEW ENGLAND DIVISION 8 Colorado Street Plattsburgh, NY 12903 Mark Waters Phone: 518 566 6450 (Ext 111) CALIBRATION Valid To: August 31, 2
Miamisburg, OH, US
ANSI/NCSL Z540-1-1994 AMERICAN TESTING SERVICES, LTD. 2000 Old Byers Road Miamisburg, OH 45342 Diedra Howell Phone: 937 298 9390 CALIBRATION Valid To: July 31, 2027 Certificate Number: 2855.02 In recogn
Cordova, TN, US
ANSI/NCSL Z540-1-1994 SIMCO ELECTRONICS 7730B Trinity Road Suite 130 Cordova, TN 38018 Ruth Gendro Phone: 425 894 5116 CALIBRATION Valid to: September 30, 2027 Certificate Number: 1395.21 In recognition of
Solon, OH, US
ANSI/NCSL Z540-1-1994 CONRAD KACSIK INSTRUMENT SYSTEMS, INC. 30925 Aurora Rd. Solon, OH 44139 Christopher S. Miller Phone: 440 836 0103 x 107 CALIBRATION Valid To: December 31, 2027 Certificate Numb
Pleasanton, CA, US
ANSI/NCSL Z540-1-1994 TRESCAL, INC. 1047 Serpentine Lane, STE 500 Pleasanton, CA 94566 Deborah McLaren Phone: 414 716 0344 CALIBRATION Valid To: August 31, 2026 Certificate Number: 2220.01 In recognition
Kentwood, MI, US
ANSI/NCSL Z540-1-1994 METROCAL, INC 3631 44th Street SE, Suite B Kentwood, MI 49512 Kent Anderson Phone: 616 698 3124 CALIBRATION Valid To: September 30, 2026 Certificate Number: 0513.01 In recognition of
Chicopee, MA, US
ANSI/NCSL Z540-1-1994 QUALITY PLUS, INC. 170 Grove Street Chicopee, MA 01020 Rachel Roy-Drouin Phone: 413 594 5529 CALIBRATION Valid To: May 31, 2027 Certificate Number: 1254.01 In recognition of the succe
Portland, OR, US
Accredited Laboratory A2LA has accredited JJ CALIBRATIONS, INC. Portland, OR for technical competence in the field of Calibration This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 170
Longmont, CO, US
ANSI/NCSL Z540-1-1994 SIMCO ELECTRONICS 389 Disc Drive Longmont, CO 80503 Ruth Gendro Phone: 425 894 5116 CALIBRATION Valid To: September 30, 2027 Certificate Number: 1395.24 In recognition of the successful
Semmes, AL, US
ANSI/NCSL Z540-1-1994 G.T. MICHELLI COMPANY, LLC 7911 Morris Hill Road Semmes, AL 36575 Bryan Moffatt Phone: 706-834-0882 CALIBRATION Valid To: March 31, 2026 Certificate Number: 3601.05 In recognition o
Livonia, MI, US
ANSI/NCSL Z540-1-1994 NOVASTAR SOLUTIONS.COM LLC DBA NOVASTAR METROLOGY 35200 Plymouth Road Livonia, MI 48150 Guy Howe Phone: 734 453 8003 CALIBRATION Valid To: March 31, 2027 Certificate Number: 1277.01 I
Ferndale, MI, US
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: 2638.01 In recognition
Torrance, CA, US
ANSI/NCSL Z540-1-1994 FISCHER CUSTOM COMMUNICATIONS, INC. 19220 Normandie Avenue, Unit B Torrance, CA 90502 David Fischer Phone: 310 303 3300 CALIBRATION Valid To: February 29, 2028
Unknown, US
Accredited Laboratory A2LA has accredited MAC CALIBRATIONS, LLC for technical competence in the field of Calibration This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017 Gener
St. Louis, MO, US
Accredited Laboratory A2LA has accredited IIA LAB SERVICES, LLC – ST. LOUIS St. Louis, MO for technical competence in the field of Calibration This laboratory is accredited in accordance with the recognized International Standard
Jackson, MS, US
ANSI/NCSL Z540-1-1994 G.T. MICHELLI COMPANY, INC. 1163 Weems Street Jackson, MS 39208 Bryan Moffatt Phone: 706-855-1111 CALIBRATION Valid To: November 30, 2026 Certificate Number: 3601.04 In recognition
Winston-Salem, NC, US
ANSI/NCSL Z540-1-1994 TRESCAL, INC. 101 N Chestnut St. Ste 210 Winston-Salem, NC 27101 Deborah McLaren Phone: 336 725 6020 CALIBRATION Valid To: April 30, 2026 Certificate Number: 1486.01 In recognitio
Indianapolis, IN, US
ANSI/NCSL Z540-1-1994 MAGNETIC INSTRUMENTATION COMPANY LLC 8431 Castlewood Drive Indianapolis, IN 46250 Greg Umana Phone: 317 841 5524 CALIBRATION Valid To: March 31, 2026 Certificate Number: 1462.0
North Billerica, MA, US
ANSI/NCSL Z540-1-1994 CAL-TEK COMPANY, LLC 20 Republic Road N. Billerica, MA 01862 Steven Donovan Phone: 800 447 4020 CALIBRATION Valid To: February 28, 2026 Certificate Number: 7440.01 In recognition of th
Harahan, LA, US
ANSI/NCSL Z540-1-1994 G.T. MICHELLI COMPANY, LLC 130 Brookhollow Esplanade Harahan, LA 70123 Shane Schexnayder Phone: 504 875 0104 CALIBRATION Valid To: June 30, 2026 Certificate Number: 3601.01 In recog
Cincinnati, OH, US
ANSI/NCSL Z540-1-1994 & ANSI/NCSL Z540.3-2006 TEKTRONIX, INC. 1 Neumann Way Cincinnati, OH 45215 Jonathan Kirklin Phone: 800 438 8165 CALIBRATION Valid To: June 30, 2027 Certificate Number: 2357.31 In rec
Morgan Hill, CA, US
ANSI/NCSL Z540-1-1994 & ANSI/NCSLI Z540.3-2006 ANRITSU AUS, CALIFORNIA 490 Jarvis Drive Morgan Hill, CA 95037 Bradley Charles Phone: 408 778 2000 CALIBRATION Valid To: April 30, 2026 Certificate Number: 2160.0
Elizabeth City, NC, US
Accredited Laboratory A2LA has accredited HOFFER CALIBRATION SERVICES, LLC (A SUBSIDIARY OF HOFFER FLOW CONTROLS, INC.) Elizabeth City, NC for technical competence in the field of Calibration This laboratory is accredited in
Mattoon, IL, US
ANSI/NCSL Z540-1-1994 JM TEST SYSTEMS, LLC 4555 Hwy 45 South Mattoon, IL 61938 Brenna Himel Phone: 1-800-353-3411 CALIBRATION Valid To: July 31, 2027 Certificate Number: 1995.06 In recognition of the succe
Concord, CA, US
ANSI/NCSL Z540-1-1994 RICE LAKE WEIGHING SYSTEMS (FORMERLY HEUSSER NEWEIGH) 1400 Willow Pass Court Concord, CA 94520-5477 mruefenacht@ricelake.com Mark Ruefenacht Phone: 925 798 8900 CALIBRATION Valid To: Septem
Cincinnati, OH, US
ANSI/NCSL Z540-1-1994 THE MODAL SHOP, INC. AN AMPHENOL COMPANY 10310 Aerohub Blvd Cincinnati, OH 45215 Lisa Moore Phone: 513 351-9919 CALIBRATION Valid To: April 30, 2026 Certificate Number: 2649.01 In reco
Schererville, IN, US
Accredited Laboratory A2LA has accredited ILLIANA INSTRUMENTATION SERVICE LLC Schererville, IN for technical competence in the field of Calibration This laboratory is accredited in accordance with the recognized International St
Knoxville, TN, US
ANSI/NCSL Z540-1-1994 LUDLUM MEASUREMENTS INC. KNOXVILLE CALIBRATION DIVISION 10744 Dutchtown Road Knoxville, TN 37932 Barbara McRae Phone: 325 235 5494 CALIBRATION Valid To: September 30, 2026 Certificate Numb
Evansville, IN, US
ANSI/NCSL Z540-1-1994 INTEGRITY CALIBRATION SERVICES, INC. 1701 Oak Hill Road Suite H Evansville, IN 47711 Richard R. Bender Phone: 812 401 1900 CALIBRATION Valid To: October 31, 2027 Certificate Number: 2358
Troy, NY, US
ANSI/NCSL Z540-1-1994 HJM PRECISION, INC. 9 New Turnpike Road Troy, NY 12182 Michael J. Magee Phone: 518 235 7407 CALIBRATION Valid To: September 30, 2027 Certificate Number: 1579.01 In recognition of the s
San Diego, CA, US
ANSI/NCSL Z540-1-1994 MATPHIL TECHNOLOGIES, INC. DBA ACCUTEK LABORATORIES 9477 Waples St., Suite 120 San Diego, CA 92121 Brett Bohannon Phone: 208 860 3981 CALIBRATION Valid To: November 30, 2027 C
Phoenix, AZ, US
ANSI/NCSL Z540-1-1994 FLUKE CALIBRATION, PHOENIX – PRIMARY PRESSURE AND FLOW LABORATORY 4765 East Beautiful Lane Phoenix, AZ 85044 Tim Mueller Phone: 877 355 3225 CALIBRATION Valid To: March 31, 2027 Certificat
Addison, IL, US
ANSI/NCSL Z540-1-1994 DICKSON 930 South Westwood Ave. Addison, IL 60101 Jay Isik Phone: 630 563 4233 CALIBRATION Valid To: July 31, 2027 Certificate Number: 1621.01 In recognition of the successful completi
Columbia City, IN, US
ANSI/NCSL Z540-1-1994 RICHARD J. BAGAN, INC. A.K.A. MONTECH USA 1280 South Williams Drive Columbia City, IN 46725 Adam Evans Phone: 260 244 5115 CALIBRATION Valid To: January 31, 2027 Certificate Number: 1625.
Orangeburg, NY, US
ANSI/NCSL Z540-1-1994 AALFA - KAL METROLOGY LABORATORY, DIVISION of AALBORG INSTRUMENTS & CONTROLS, INC. 20 Corporate Dr. Orangeburg, NY 10962 Agnieszka Malolepszy Phone: 845 770 3000 CALIBRATION Valid To: Ap
Lansdale, PA, US
ANSI/NCSL Z540-1-1994 TRESCAL, INC. 1565 Bustard Road Lansdale, PA 19446 Lisa Myles Phone: 610 287 3433 CALIBRATION Valid To: April 30, 2027 Certificate Number: 2551.01 In recognition of the successful comp
Alpharetta, GA, US
ANSI/NCSL Z540-1-1994 & ANSI/NCSL Z540.3-2006 TRESCAL, INC. 5965 Shiloh Road East Alpharetta, GA 30005 Julio Rodriguez Phone: 678 965 4660 CALIBRATION Valid To: February 29, 2028 Certificate Number: 2662.01
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This page is a fixed slice of the register: every ANSI/NCSL Z540-1-1994 scope we hold for United States. Search narrows it further by city, accreditation body, or a term from the scope text itself.
Search labs in United StatesAmerican Association for Laboratory Accreditation (A2LA) is the primary accreditation body issuing ISO/IEC 17025 accreditation for testing laboratories in United States.
ISO/IEC 17025 is the international standard for the competence of testing and calibration laboratories. Accreditation to this standard provides independent confirmation that a laboratory operates a quality management system and is technically competent to produce valid results within its declared scope.