Model FC 204 Fraction Collector. Includes FC204 prep valve (5 to 200 mL/min.), polypropylene tray, platform for elevating tray and inlet tubing. 110/220V, 60 Hz. Collection by time (0.01-99.99 minutes per tube), drop (1-9999 drops per tube), or peak (adaptive slope algorithm accommodates drifting baselines, negative and asymmetrical peaks applying user-settable peak parameters). Maximum capacity: quantity 432 of 10 mm tubes. Ten programmable collection windows and multi-cycle operation for both analytical and preparative collection. Features include: micro-processor control: integral keypad with two-line 24-character LCD readout for program entry: HELP key for specific instructions: edit collection parameters during run to adapt to changing conditions: 10 or 100 mVFS detector input.