* Run 05: SMPS_20220315_Run05
* Run 06: SMPS_20220315_Run06
Start Time: 14:24 UTC
CPC Starting Concentration: 6300 #/cm3
APS Starting Pattern: Flat. Minor peaks around 3-4 μm at 4 #/cm3
CPC continuing to linearly drop off
* Run 07: SMPS_20220315_Run07
Start Time: 14:59 UTC
CPC Starting Concentration: 2800 #/cm3
APS Starting Pattern: Relatively Flat
CPC Concentration after 5 min: 2000 #/cm3
Any minor APS peaks are around 5 #/cm3
CPC showing asymptotic behavior, signs of flattening out.
Tapping valves causes spikes in CPC concentrations.
* Run 08: SMPS_20220315_Run08
Start Time: 15:28 UTC
Filter Off: 16:12 UTC
CPC pattern very different. CPC concentrations increased and now relatively stable. Different solution producing different results. CPC concentration stabilized around 380 #/cm3.
APS Pattern: Flat
After peak, seeing slight decay in concentration.
* Run 09: SMPS_20220315_Run09 (Acetone Run)
Start Time: 16:25 UTC
Purge of Generator: 16:29 UTC
Peak of purge at 100 #/cm3. Falling off quickly.
Second peak observed at 16:37 UTC. Unknown what the cause is.
Filter Start Time: 16:41 UTC
Back to background levels after purge at 16:44 UTC.
Train went by at 16:51 UTC. No response in data.
Tapping valves at 16:54 UTC. Minor peak of 40 #/cm3.
* Run 10: SMPS_20220315_Run10 (Propane Run)
Start Time: 18:08 UTC
Filter On: 18:09 UTC
CPC just background values ( ≥ 0.5 #/cm3).
APS has very few larger particles. Peak around 0.6 μm at ∼0.2 #/cm3.
10 mins in, everything remains the same. APS peaking between 0.6-0.7 μm.
* Run 11: SMPS_20220315_Run11 (IPC 2021 Old Run)
Start Time: 19:01 UTC
CPC Concentration Peak: ∼440 #/cm3
APS Pattern: Flat, no real peaks
CPC showing linear decrease. ∼350 #/cm3 at 5 mins in.
* Run 12: SMPS_20220315_Run12 (New Filtration System: Duplicate to Run 1)
Filtration System added: 0.2 #/cm3 background
CPC hovering around 20,000 with valves open. Counts averaged around 17,000 #/cm3. Background is 0.1-0.3 #/cm3.
Background 1 to Atmos. 15,000 ratio
CPC Start Time: 20:05 UTC
Sample Start Time: 20:30 UTC
1 minute sample outside (air without dilution)
1 minute sample with dilution
Repeat process for two of each.
Generator CPC peak at 1,100 #/cm3. Dropping linearly to 750 #/cm3 3 minutes later.
CPC holding steady between 700-750 #/cm3.
* Run 13: SMPS_20220315_Run13 (WMI Formula)
CPC Start Time: 20:55 UTC
Initial Concentration: ∼20 #/cm3
Ratio Tests:
13-15 background to 40,000 (1 valve)
13-15 background to 80,000+ (all valves)
Concentrations not dipping down to previous background levels. Some contamination possible. Another bypass might be needed.
Running propane to clear 8“ tubing. No real response. Still 8-10 #/cm3. Needs to be around 1 #/cm3.
More ratio tests:
3-6 background to 14,000-15,000
5-7 background to 12,000-13,000
5-7 background to erroneous values.
Sample Start Time: 22:10 UTC (same as filter start time)
CPC Concentration: 3,720 #/cm3
APS pattern: Continued relatively flat pattern ∼ 4 #/cm3
Fans once again died at the end. (overheated)