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Mass concentration of 3-D printer emission sampled during 2-h exposure.
| Group | Filter weight (Before) | Filter weight (After) | Flow rate (cc/min) | Sampling time (min) | Mass concentration (μg/m3) |
|---|---|---|---|---|---|
| Control | 11.894 | 11.895 | 60 | 120 | 93 |
| Exposure 1 | 12.705 | 12.714 | 60 | 151 | 957 |
| Exposure 2 | 12.194 | 12.199 | 60 | 96 | 810 |
