512-846-2893 [email protected] [email protected]

ValTub

Calibration shell for NICO, NICO plus, and OPUS

TriOS ValTub calibration shell

ValTub — Calibration Shell

Allows the user to add a calibration standard directly to the sensing element for testing or calibrating the nitrate probe without removing it from its installation.

  • Apply calibration standard directly to the sensing element
  • Simplifies in-situ testing and calibration
  • Available for 10 mm and 50 mm path length sensors
  • Compatible with NICO, NICO plus, and OPUS
Part NumberDescription
10A300000VALtub — 10 mm calibration shell
10A300001VALtub — 50 mm calibration shell
© 2026 HydroTech ZS Consulting. All rights reserved.