Choose leak standards from the industry leader in Calibrated Leak Standards & Vacuum Gauge Calibration—LACO delivers confidence and peace of mind through fast, accurate, and accredited leak standards and vacuum gauge calibration for all manufacturers. 


Image showing the word FAST overlaid on it

Quick lead times, responsive customer service, lifetime warranty, and optional expedited service.

Image showing the word ACCURATE overlaid on it

Accredited NIST traceable leak standards. Stable, clog resistant, robust, and low temperature coefficient.

Image showing the word ACCREDITED overlaid on it

A2LA laboratory accreditation to ISO/IEC 17025:2017 and ANSI Z540-1-1994 standards.

  • New Leak Standards: A wide range of leak rates, connection fittings, gas and mix choices, multi-point calibration, and application engineering support, and micro tube capillary leak element design
  • Leak Standard Calibration: Complete multi-point comparison calibrations
  • Vacuum Gauge Calibration: Full calibration support, record retention, and reporting