Vernier Kolorimetri (COL-BTA Colorimeter)
This 4-wavelength 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.
Useful Range 0.05 to 1.0 (absorbance) and 90% to 10% transmittance (%T), Wavelengths: 430 nm, 470 nm, 565 nm, 635 nm