*Please make sure your experiments are secured and chemicals have been cleaned up. Details below.* CLEANROOM AND LAB PREVENTATIVE MAINTENANCE SCHEDULE: MONDAY, 03.31.08 TO FRIDAY, 04.04.08 Monday, 03.31.08, 10:00 AM: All materials must be removed from cleanroom solvent hoods. Monday, 03.31.08, 4:00 PM: All materials must be removed from the remaining cleanroom hoods. CLEANROOM CLOSED. Tuesday, 04.01.08 7:30 AM: No ultrapure water available. No acid processing in laboratories. No hazardous gases available. CLEANROOM CLOSED. Wednesday, 04.02.08, all day: No ultrapure water available. No acid processing in laboratories. No hazardous gases available. Wednesday, 04.02.08, 4:00 PM: All materials must be removed from laboratory hoods (including biosafety cabinets; all bio materials must be removed from exhausted enclosures). Thursday, 04.03.08, 8:00 AM: Cleanroom will re-open, barring unforeseen circumstances. All solvent hoods and processes will remain down for general exhaust upgrades. LABORATORIES CLOSED. Thursday, 04.03.08 Friday, 04.04.08, Noon: Laboratories will re-open and Cleanroom general exhaust should be operational, barring unforeseen circumstances. ***Questions or comments? Contact Mark Voorhis (mvoorhis@purdue.edu)***