The UV Open Colorimeter is a single-wavelength photometer for measuring UV light absorbance through samples in a standard 10mm pathlength cuvette. Applications include protein quantification with a UV LED. The device uses our AS7311 UV sensor board and a PyBadge pre-programmed with open source CircuitPython firmware. The cuvette holder and enclosure are made from 3D-printed black plastic. Links to the hardware designs and open source firmware and libraries are in the Product Guide. The UV Open Colorimeter ships pre-programmed & ready-to-use. No assembly, soldering or programming is required. Product Features: Single wavelength photometer with a UV Sensor board Select which UV wavelength you want to use from 6 different options Users can easily swap out the UV LED for a different wavelength using the additional UV LED options. There are available as add-on options below or from the store page Includes a USB cable for battery-charging or power Includes a pack of 4 UV-transparent microcuvettes Includes a light-blocking cap to place over the cuvette during measurements Documentation: Visit the Product Guide for full details. The UV Open Colorimeter test and measurement equipment is for research use only (see Terms and Conditions).