PASPORT Turbidity Sensor - PS-2122

Move to Wireless!

Recommended Alternative — The Wireless Colorimeter and Turbidity Sensor can perform all of the functions of the PASPORT Turbidity Sensor at a lower price while also doubling as a colorimeter. Best of all, it connects directly* to your computers, tablets, smartphones and Chromebooks without the need for an interface and with no cables to get in the way.

*Devices without native Bluetooth® Smart connectivity will require a low cost USB adapter - see the product page for details.



Unlike other Turbidity Sensors that simply measure transmitted light, our Turbidity Sensor measures light scattered at 90 degrees, the industry standard (Nephelometric technique). Use of digital signal processing makes measurements extremely accurate and repeatable. Fast, easy calibration uses just two cuvettes and takes less than 15 seconds.

  • Stabilized light source eliminates drift during an experiment.
  • Black, opaque housing eliminates ambient light to ensure data accuracy.
  • Calibrate in less than 15 seconds

Typical Applications

  • Compare the turbidity of water samples from various field locations
  • Determine the rate of settling of a sample
  • Compare local water samples to National Standards
  • Measure the formation of a precipitate

Special Features

  • Pulsed infrared light source for longer battery life
  • Borosilicate cuvettes (5 included) last longer than plastic and have greater optical clarity


  • Hach calibration standard (100 NTU)
  • 5 Borosilicate glass cuvettes
  • Molded plastic storage case for sensor and cuvettes
  • Sensor Extension Cable
  • Specifications

    • 0-400 NTU
    • 0 to 20 NTU at ± 0.2 NTU
    • 20 to 100 NTU at ± 0.5 NTU
    • 100 to 400 NTU at ± 1 NTU
    • 0.1 NTU
    Default Sample Rate
    • 1 Hz
    Maximum Sample Rate
    • 5 Hz
    Temperature Range
    • 5 to 40 °C


    Time: 8/16/2016 4:45:05 PM

    Buying Guide

    Required for use with PASPORT
    Replacement Cuvettes/Cap
    100 NTU Calibration Standard
    Replacement Parts
    Replacement Cuvettes/Cap   PS-2509
    100 NTU Calibration Standard   PS-2511

    Interface Required

    To use this product you need a PASCO interface. 

    New to probeware or have questions about  sensors or interfaces? Contact Teacher and Technical Support.  We're here to help!

    Software Required

    SPARKvue software or PASCO Capstone software may be used. PASCO Capstone is available for Mac and Windows. SPARKvue is available for Mac, Windows, iOS, Android and Chromebooks.

    Learn more about Bluetooth Compatibility.