Protean Instrument, a division of Ludlum Measurements, is a leading manufacturer of high performance counting systems for measuring alpha/beta activity at very low environmental levels. The company was founded in 1989 by people who were the principal designers and manufacturers of the classic “dual-rail” alpha/beta and smear counting systems. Their design and manufacturing expertise is evident in the number of these classic systems still operating today. We are committed to great customer service and providing dependable, long-lasting equipment.