Our OSL laboratory has full sample preparation facilities for luminescence dating. This includes: sieving equipment; heavy liquid separation facilities; and acid treatment equipment. OSL measurements are made on a Riso Automated OSL Dating System with software-controlled detection and stimulation head (DASH) containing light emitting diode (LED) modules, that has two filter changer wheels, and a single grain green laser (532 nm) attachment. A Daybreak alpha counter is available to help determine the concentrations of radioisotopes in sediment. The laboratory also has an an InSpector 1000 high–performance digital hand–held spectrometer for field dose rate determination.