Spectral Tube Holder & Power Supply. European designed and manufactured. For quick and safe setting up of spectral tubes. The spectral tube is mounted from the front in the insulated holders with electrodes, where the lower holder is spring loaded parallel to the tube axis. The holder is provided with power supply that can deliver kV DC at max mA to the electrodes built into the base of the insulated holder. Can be used with spectral tubes OP66582 to OP94616 and with many other types of spectral tubes. For 230 AC. Dimensions (L H W): 78 78 290 mm.