Use to excite spectrum tubes.
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 beind the tube eliminates distracting ambient light and protects the tube from breakage. Cornes wiht instructions. This power supply operates on 1115 vac, 50/60 hz with its own three-wire grounded cord. Unit is 37. 5 cm high and holds 26 cm tubes.