The spectrometers are based on a 100 mm optical bench with a NA of 0.13. The 2.5-HSC series feature 256- or 512-pixel InGaAs detectors and are available in multiple configurations. These instruments are suitable for grain, corn, wheat, soya and polymer analysis, as well as for medical uses, process monitoring and other analysis. The 256-pixel detectors offer best sensitivity for most applications. If resolution is particularly important, or more datapoints for modelling are required, the 512-pixel detector will be the best choice. A range of gratings are available enabling the instrument to be tailored for optimal performance in a particular application and the instrument is equipped with a replaceable slit.