Modified version of 7900 Apparatus. Sample tubes have been replaced with a flow-thru quartz or borosilicate coil for continuous radiation of small or large samples. Consists of a cylindrical lamp housing, medium pressure photochem lamp, quartz or borosilicate coil (with or without jacket), and power supply. Cooling fan is located at bottom of housing. Lamp power supply includes a manual or automatic 12 hour timer programming exposure time. Coil has 1/2" Swagelok ends with approx. capacity of 175mL, max. flow rate of 10L/min.