Buck Scientific 58 Fort Point Street East Norwalk, CT 06855 1-800-562-5566 P: 203-853-9444 F: 203-853-0569 [email protected] Combination Batch Hydride Generator The Model-420 is an easily adaptable accessory for Flame AA Spectrophotometers that allows PPT detectability for As, Se, Sb, Sn, Te, Bi and Ge using standard hydride generation procedures. Using inert polymer components and a reliable pumping system, users can quickly switch between flame and hydride.