EISCO Spectrometer Light Source (110V) - Used in Spectrometry Experiments - High Brightness - Predominantly Sodium

Item appeared to have been previously used because it showed signs of being repacked. It had a bulb included which was not mentioned in the description, ie previously used. It did not include the 2mm, 4mm windows or slit. The lamp had a fixed window, I didn't measure the hole but it is probably about 1.5 to 2 cm diameter. I rated it a 3 out of five because it works well but it was not as described.