Product image for Colorimeter
Product image for Colorimeter
Product in use image for Colorimeter
Product in use image for Colorimeter
Product in use image for Colorimeter

The Colorimeter is great for Beer’s law experiments, determining the concentration of unknown solutions, or studying changes in concentration vs. time.


This 4-wavelength Colorimeter measures the amount of light transmitted through a sample at a user-selectable wavelength in order to determine the concentration of a solution. Features such as automatic sensor identification and one-step calibration make this sensor easy to use.


  • Range: 0 to 3 (absorbance)
  • Useful Range:
    • 0.05 to 1.0 (absorbance)
    • 90% to 10% transmittance (%T)
  • Wavelengths: 430 nm, 470 nm, 565 nm, 635 nm
  • Resolution: 0.035 %T
    (LabQuest 2, LabQuest, LabQuest Mini, Go!Link, LabPro)
  • Supply voltage: 5VDC +/- 25 mV
  • Supply current: 40 mA (typical)
  • Power up time: 700 ms (maximum)
  • Output voltage range: 0 - 4 V
  • Transfer function: Vout = 0.035 x (%T) + 0

Download the user manual for full specifications

Experiments and Lab Ideas

Select a lab book to see a list of experiments and more information.

Lab Ideas and Innovative Uses

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What's Included


The Colorimeter requires a compatible interface and software to collect data. Interface and software sold separately. Getting started with probeware »

Compatible Interfaces

The Colorimeter is compatible with these interfaces:

Ordering Information

All prices are for U.S. educators.

    NameOrder CodePriceQuantity
    Optional Accessories
    Cuvette RackCUV-RACK$9
    Plastic Cuvettes (visible range)CUV$15
    Water Depth SamplerWDS$71

    Related Products

    Educational use only: Vernier products are designed for educational use. They are not appropriate for industrial, medical, or commercial applications. Product usage disclaimer »

    Order Code COL-BTA
    U.S. Educator Price $115

    Sample Data

    Beer's Law
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