Ultrapen™ PT5 Dissolved Oxygen (DO) & Temperature Pen


The PT5 is a rugged, lab-accurate water quality pocket tester with simple, one-button functionality.

High-performance features:

  • Industry Leading Accuracy
  • Display DO in Concentration, % Saturation, or Both
  • Adjustable for Altitude and Salinity
  • 3 Calibration Methods: Air, Water and zero ppm DO
  • Dynamic Membrane Temperature Correction
  • Live or Hold Mode – User Selectable
  • Auto-Off Feature – User Adjustable
  • Proprietary Sensor Design
  • Easy to Use – One Button Control
  • Rugged Design with Aircraft Aluminum Body
  • Durable, Epoxy Encapsulated Electronics
  • Waterproof
  • Powered by One N Type Battery (Included)