Spectrum Discharge Tube, Mercury Gas to show spectrallines of pure substances. Tubes approximately 260mm long, central capillary portion approximately 3-1/2 to 4 (90-100mm) long with electrodes sealed at both ends and connected to lead wires protected by metal caps
Premium Clamp - Three Prong with Bosshead, Vinyl Coated Extension lab Clamp, 8.5 cm maximum clamp opening attached to High Strength Alloy swivel bosshead, Boss accommodates to 18 mm rod
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