High quality, straight-form spectrum tubes to effectively demonstrate the spectral lines of pure substances. 260 mm in length with a large 10cm capillary in the center for greater viewing area. These spectrum tubes are designed for operation intervals of 30 seconds, and should be used for 30 seconds on/30 seconds off (for intermittent use only, not to be used as a lamp source). NOTE: Expected life of spectrum tubes will vary depending on the gas they contain. If the tubes are used as recommended and not allowed to overheat, the useful life, or time it takes to detect contamination with the usual measuring equipment is very long.
Spectrum tubes require spectrum tube power supply, and are recommended for use in conjunction with the Spectrum Tube Holder with Power Supply (code: PH1197A).
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