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 PyBadge enclosure are made from 3D-printed black resin. Links to the hardware designs and open source firmware are in the Product Guide.

Product Features:

• This is a multi-channel photometer with an AS7341 light sensor
• Default light source is a current-controlled white light LED board
• The Multichannel Open Colorimeter ships pre-programmed & ready-to-use. No assembly, soldering or programming is required
• Includes a USB cable for powering via a USB port and a light-blocking cap to place over the cuvette during measurements
  
• Includes a pack of 6 cuvettes: 3 macro (2.5-4.5 mL) and 3 semi-macro (1.5-3.0 mL)
  
• The Multichannel Colorimeter does not include a lithium battery but a battery can be easily installed to use as a portable device

Documentation: Open Colorimeter Product Guide 

The Multichannel Open Colorimeter test and measurement equipment is for research use only (see Terms and Conditions).