"Wardssci090081"

This 4-wavelength Vernier® Colorimeter is great for Beer's law experiments, determining the concentration of unknown solutions, or studying changes in concentration vs. time.

-The new design includes a one-button automatic calibration feature.
-Fifteen 3.5 ml cuvettes are included.
-A package of 100 replacement cuvettes (with 20 lids) is available separately.