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•pump in REV: to clean old sample from lines (pulls it into syringe), & to pull plunger back for syringe removal. 7 FEB - MLR info •MLR ops will be moved up to day 1. •Launch with MLR in "pre-process" - the stirring is active- to minimize "settling" of spheres •once on-orbit, stirring is not required, exp can be switched - OFF [no orbiter pwr req'd] •activation: take MLR to process mode (this turns on heating cycle, sequencer, etc). Switch is cycled through "PRE" to avoid problems (seen on earlier flts) with malf tb. Experiment runs for 20 hrs. Should be de-activated within 30 min of completion. •de-act involves taking exp to "PRE" for short (~2 hr)period of time •"post deact" takes exp-off. It stays off until D/O prep, when its turned to "PRE" for entry. [[drawing of timeline]]