Product image for Colorimeter
Product 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

Sensor Requirements

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:

All prices are for U.S. educators.

NameOrder CodePriceQuantity
Optional Accessories
Cuvette RackCUV-RACK$9
Plastic Cuvettes (visible range)CUV$15
Water Depth SamplerWDS$79

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
Beer's Law
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