Released by B&W Tek Inc. for use in near-IR applications, the Sol 2.5 InGaAs linear array spectrometer covers the wavelength range from 1700 to 2500 nm and features enhanced thermoelectric cooling and low-noise readout electronics for longer integration times. It offers four sensitivity and dynamic-range settings and a built-in 16-bit digitizer, and it delivers 9-nm FWHM spectral resolution. Readout speed is 1 MHz, data transfer speed is 3 ms per spectrum in fast acquisition mode, integration time is from 10 μs to >64 ms, and operating temperature is from 0 to 30 °C. The system is supplied with a USB 2.0 interface, with RS-232C available as an option. Applications include composition analysis and moisture content.