Spectrum Tube With Power Supply - PE-235 / 17533

As you conveniently mount the spectrum tubes into the spring-loaded holders and energize them, a specially designed shield holds the tube firmly while preventing you from touching the electrodes. A black metal panel behind the tube eliminates distracting ambient light and protects the tube from breakage.This power supply operates on 115 VAC, 50/60 Hz with its own three-wire grounded cord. Unit is 37.5 cm high and holds 26 cm tubes.