cleaning cleanroom and particle count

• 5:10 pm: ran zero count test on particle counter
• 5:14 pm: started particle count

  NOTE: initial counts are significantly above allowed limit. ~10 times larger than ISO class 5 standard in the smallest size range. Realized partway through ceiling tile changes that the power/lights for some of the hepa fans in the ceiling frame had been turned off. May explain this high number. Have since turned fans back back on.

  • zone 3:
    • 0.3 u: 109208
    • 0.5 u: 16337
    • 1.0 u: 581
• zone 4:
  • 0.3 u: 51340
  • 0.5 u: 9228
  • 1.0 u: 581
• 5:33 pm: started replacing ceiling tiles
• 6:25 pm: began surface check and wipedown, including softwalls
• 6:33 pm: started vacuuming the floor
• 6:45 pm: finished vacuuming the floor
• 6:45 pm: started mopping the floor
• 6:50 pm: finished mopping the floor
• 6:52 pm: started cleaning the buckets
• 6:53 pm: started mopping with IPA wipes
• 6:58 pm: finished mopping with IPA wipes
• 6:59 pm: changed sticky floor mats
• 7:00 pm: started particle count
  • zone 3:
    • 0.3 u: 5404
    • 0.5 u: 1413
    • 1.0 u: 41
• zone 4:
  • 0.3 u: 1704
  • 0.5 u: 332
  • 1.0 u: 166