UltrapenX2™ PTBT4 Bluetooth® Enabled Free Chlorine Equivalent (FCE ™) & Temperature Pen


The PTBT4 is a lab-accurate water quality pocket tester that allows you to use your mobile device and the X2 app to measure, store and export data.

High-performance features:

  • Accuracy of up to ±0.3 ppm FCE
  • Calibration with pH and ORP Standard Solutions
  • Automatic Temperature Compensation
  • Measurement Storage with Time, Date and Location
  • Export Stored Measurement Data Via Email
  • Live or Hold Mode – User Selectable
  • Proprietary Sensor Design
  • Rugged Design with Aircraft Aluminum Body
  • Durable, Epoxy Encapsulated Electronics
  • Waterproof
  • Powered by One N Type Battery (Included)