Multichannel Open Colorimeter

The Multichannel Open Colorimeter is a photometer for measuring light absorbance through samples in a standard 10mm pathlength cuvette. The device uses the Adafruit AS7341 10-Channel Light Sensor. The AS7341 light sensor is an multichannel light sensor with 8 channels covering the visible light spectrum from 415-680 nm as well as a near-IR channel.

• channel 1 (Violet): λp = 415nm, FWHM = 26nm
• channel 2 (Violet): λp = 445nm, FWHM = 30nm
• channel 3 (Blue): λp = 480nm, FWHM = 36nm
• channel 4 (Green): λp = 515nm, FWHM = 39nm
• channel 5 (Green): λp = 555nm, FWHM = 39nm
• channel 6 (Orange): λp = 590nm, FWHM = 40nm
• channel 7 (Red): λp = 630nm, FWHM = 50nm
• channel 8 (Red): λp = 680nm, FWHM = 52nm

The Multichannel Open Colorimeter uses 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 are in the Product Guide.

The Multichannel Open Colorimeter ships pre-programmed & ready-to-use. No assembly, soldering or programming is required. 

Product Features:

• Multi-channel photometer with the AS7341 light sensor
• Current-controlled white light LED board as light source
• Includes a USB cable for battery-charging or power
  
• Includes a pack of 6 cuvettes: 3 macro (2.5-4.5 mL) and 3 semi-macro (1.5-3.0 mL)
• Includes a light-blocking cap to place over the cuvette during measurements

Documentation: Visit the Product Guide for full details.

Open Colorimeter is Open Hardware certified.