TESCO ISO 17025 Testing and Calibration Laboratory

PJLA Calibration Accreditation


At TESCO we are dedicated to quality, accredited, calibration offerings, flexibility, accuracy, consistency and unmatched customer services.

The TESCO Calibration & Testing Laboratory is:
• ISO 9001:2015 Certified and ISO/IEC 17025:2017 Accredited
• ANSI/NCSL Z540-1-1994 (MIL-STD-45662A plus software control)
• Traceable through reference standards maintained by national institutes such as NIST, NRC, etc. in a diverse extended scope of accreditation

In-Lab Calibration

  • We calibrate, upgrade or repair all TESCO or Knopp equipment or standards
  • Knopp transformers are the industry standard and we maintain a primary reference transformer standards at an economical price below nationals institutes
  • Our Next Gen meter test equipment is fast becoming the choice of the industry
  • This service offers you the best value

On-Site Calibration

  • This premium service offers you the flexibility of the same quality calibration, repair and upgrades you expect from our in-lab services
  • Fully traceable and accurate
  • We bring our lab to you for a cost competitive solution that matches your needs

Remote “Loaner” Calibration

  • This accommodating solution offers increased flexibility  where we send you at loaner reference standard fully traceable and all the hardware and/ or software required to perform your own calibration
  • Includes clear easy to read and use work instructions
  • This is a very cost effective alternate solution to our On-Site services
  • We bring our lab to you for a cost competitive solution that matches your needs

Non-TESCO Energy Standards

Yes, we can re-certify most non-TESCO Energy Standards or field test equipment

Other Test Instruments

TESCO can test and certify other industry test equipment such as:


  • Ammeters
  • Clamp On Meters
  • Digital Hand Held Multimeter
  • Hi-Pots
  • Mega-ohmmeters
  • Watt-meters
  • Decade Boxes

High Voltage

  • AC up to 36,000 V AC
  • DC measure up to 40 K V

High Current

  • AC up to 8,000 amps

ISO 17025:2017 Accreditation

ISO 9001:2015 Certificate


TESCO's ISO 17025 Lab

Equipment Documentation

Get the PDF

Inquire about TESCO services

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