StellarNet Inc. has introduced the IC2 integrating sphere for use with its portable EPP2000 spectroradiometers. This 2-in. cube attaches to the spectroradiometer via an SMA fiber optic cable and has a light input port with a 5/8-in. diameter. It measures spectral irradiance, illuminance and reflection from 300 to 2500 nm. The device can be used with SpectraWiz software to measure the dominant wavelength color, the purity percentage and the correlated color temperature of LEDs.