Table 1 Characteristics of samples collected from ISS cabin locations and Earth-based cleanrooms where spacecraft components are assembled
Sample name | Replicates | Location | Cleanroom classification | Source | Air/surface | Specifications | Usage time | Model | Mission activities |
|---|---|---|---|---|---|---|---|---|---|
ISS HEPA | 1 | ISS | None | Filter element particles | Air | HEPA rated, retains 99.97 % particles 0.3 μm; 20-mesh inlet screen has 841 μm sieve openings | 40 months | Part no. SV810010-1, Serial no. 0049; HEPA media supplied by Flanders Filters, Inc.; Nomex inlet screen | Returned aboard STS-134/ULF6 in May 2011 |
ISS Debris | 2 | ISS | None | vacuum cleaner bag dust | Surface | Vacuum bag retains particles >6 μm; HEPA-rated filter retains particles >0.3 μm | 1 day | ISS vacuum cleaner | Expedition 31; returned aboard Soyuz flight 29S in July 2012 |
JPL-SAF Debris | 2 | JPL-SAF | 10 K | Vacuum bag dust | Surface | Retains 99.7 % particles >3 μm | 70 days | Nilfisk GM80, 81620000 | No major mission |
JPL-103 Debris | 1 | JPL-103 | 1 K | Vacuum bag dust | Surface | Retains 99.7 % particles >3 μm | >180 days | Nilfisk GM80, 81620000 | No major mission |