ASTM D6938, ASTM D2950. The ValiDator is patented, NIST traceable, & ISO/IEC 17025 Accredited technology that can verify your nuclear density gauge calibration at all measurement depths.

Others have tried, but InstroTek is the only company with the know how and the technology to develop this innovative device.

Validator and Gauge Features:

  • Works with InstroTek, CPN, Humboldt and Troxler density gauges
  • Meets  verification Requirements of ASTM
  • Densities derived from NIST Traceable Reference Blocks
  • Calibrated to ISO/IEC 17025 for Accredited Laboratories
  • Field or Laboratory ready
  • Reliable standard, no moving parts
  • Portable and mobile
  • Nuclear Gauge and Leak Test Management Capability


  • Reduce Nuclear Gauge Shipping Formalities
  • Routine Check on Calibration Quality
  • Reduce Density Gauge Operating Costs
  • Resolve Disputes in Nuclear Gauge Results
  • Improve Measurement Quality
  • Manage Your Density Gauge Fleet More Effectively
  • Verify  InstroTek, CPN, Humboldt and Troxler Nuclear Density Gauges
Density Guage Models

ValiDator I

  • InstroTek Xplorer 3500
  • Troxler 3411, 3430, 3440
  • Troxler 3450 – Soils Mode
  • CPN MC Series
  • Humboldt 5001 Series

ValiDator II

  • Troxler 4640
  • Troxler 3450 – Thin-Lift Mode (Asphalt)