Fison Portable Colorimeters function on LED light with a wavelength accuracy of ±1 nm. These can function in wavelength ranges of 420nm, 520nm, 560nm and 610nm respectively. The devices are user-friendly, with automatic wavelength selection and correction, a USB interface and offer customization for ten measurement programs. They provide storage for up to 500 measurements. Our portable colorimeters have IP67 protection level that makes them resistant to dust, water and shocks.