Profile: Quantum Northwest Inc. provides temperature-controlled cuvette holders and photoacoustic instrumentation. We offer temperature-controlled cuvette holders that use the Peltier principle, providing fast, precise temperature changes over a wide range. Our Flash 300™ temperature-controlled cuvette holder for laser spectroscopy is a stand-alone cuvette holder for transient absorbance, flash photolysis, fluorescence, pulsed-laser photoacoustics and a variety other spectroscopic experiments that uses the Peltier effect to provide rapid & precise temperature control over a wide range of temperatures from as low as -55 deg C to +105 deg C. Our pulsed-laser photoacoustics measures the rapid volumetric changes that occur in solution on the absorbance of a brief flash of laser light.