Spectrophotometers are not created equally - they all have different bulbs, bulb ages, and detectors. While the data from one spectrophotometer are not dire...

2-LED Version: 680 nm 750 nm 8-LED Version: 430 nm 470 nm 525 nm 565 nm 595 nm 620 nm 680 nm 750 nm

A digital PDF copy of the ET2020 Handheld Photometer can be found below.