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PT1 Conductivity/TDS/ Salinity/Temp. Pen


983 in stock

This portable water analysis instrument is designed to be extremely accurate, fast and simple to use in diverse water quality applications. Advanced features include the ability to select from 3 different solution types that model the characteristics of the most commonly encountered types of water; proprietary temperature compensation and TDS conversion algorithms; highly stable microprocessor-based circuitry; user-intuitive design; and waterproof housing. A true, one-handed instrument, the PT1 is easy to calibrate and easy to use. To take a measurement, you simply press a button then dip the pen in solution. Results display in seconds.

ULTRAPEN™ PT1 Benefits:

  • Reliable Repeatable Results
  • Accurate
  • Affordable
  • Easy to Use
  • Rugged Design
  • Ensure Product Quality
  • Reduce Waste
  • Protect the Environment

ULTRAPEN™ PT1 High Performance Features:

  • Accuracy of ±1% of READING ±.2% at calibration point
  • Reliable Repeatable Results
  • Automatic temperature compensation
  • Autoranging
  • Accuracy of benchtop lab equipment in an affordable, portable, compact pen
  • Rugged, reliable, shock-resistant fully encapsulated electronics, body constructed of aircraft aluminum
  • Simple one button function
  • Specially designed with measurement ranges and solution modes to meet the water quality testing needs of many applications
  • High capacity N-type battery included
  • Waterproof


  • PT1 Pocket Water Analysis Pen – Battery Installed
  • Protective Cap
  • Scoop
  • Pocket Clip
  • Quick Start Guide
Cond KCl Conductivity potassium chloride microsiemens (µS)
tdS 442 Total Dissolved Solids (TDS) 442™ Myron L Natural Water Standard parts per million (ppm)
tdS NaCl Total Dissolved Solids (TDS) sodium chloride parts per million (ppm)
SALt 442 Salinity 442™ Myron L Natural Water Standard parts per thousand (ppt)
SALt NaCl Salinity sodium chloride parts per thousand (ppt)

ULTRAPEN™ PT1 Specifications

Measurement Range: 1 – 10000 µS or ppm (0.0010 – 10.000 ppt salinity)
Accuracy (After Wet Calibration): ± 1% of reading
Repeatability: < 1000 µS or ppm ± 1 Count ≥ 1000 µS or ppm ± 0.3% of reading
Resolution: Conductivity and TDS: 0.1 for 1.0 – 99.9 µS or ppm 1 for 100 – 10000 µS or ppm
Salinity: 0.0001 for 0.0010 – 0.0999 ppt 0.001 for 0.100 – 10.000 ppt
Temperature: 0.1ºC / 0.1ºF
Time to Reading Stabilization: 10 – 20 seconds
Power Consumption: Active Mode: 30 – 140 mA, Sleep Mode: 2 µA
Sleep Mode Power Consumption: 2 µA
Temperature Measurement Range: 0 – 71°C or 32 – 160°F
Temperature Accuracy: ± 0.1ºC
Temperature Compensation: Automatic to 25ºC
Physical Dimensions: 17.15 cm L x 1.59 cm D or 6.75 in. L x .625 in. D
Weight: 55 g or 1.94 oz.
Case Material: Anodized Aircraft Aluminum with Protective Coating
Battery Type: One N type, Alkaline, 1.5V
Calibration Solution Point: 1800 µS KCl; 3000 ppm 442™ (2027 ppm NaCl)
Operating/Storage Temperature: 0 – 55ºC or 32 – 131ºF
Water Resistance: IP67 and NEMA 6
E Minimum height 5 mm EN61236-1: 2006 – Annex A: 2008 Electrostatic discharge to the PT1 may cause it to spontaneously turn on. If this occurs, the PT1 will turn off.
WARNING! These products can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
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