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. Comes with instructions.
This power supply operates on 115 VAC, 50/60 Hz with its own three-wire grounded cord and delivers a maximum of 10mA current.
Unit is 37.5cm high and holds 26cm tubes.
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