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The PASPORT Colorimeter records all 4 wavelengths simultaneously--no need to guess at wavelength to get a quality measurement.
Digital circuitry handles the calculations, calibrations and adjustments – all you have to do is collect data. Simultaneously reports both absorbance and transmittance.
Black, opaque housing eliminates ambient light to assure data accuracy.
Great for Beer’s law experiments, absorbance vs. concentrations, and reaction rates.