Table 1. Summary of measured O2 consumption rates, method settings and statistics.
| Exp. | Sensor | O2 Conc. | O2 Rate | SE | RMSRES | F | Pot. Det. Lim. |
| µmol L−1 | nmol L−1 h−1 | nmol L−1 h−1 | nmol L−1 | d−1 | nmol L−1 h−1 | ||
| 1 | Trace Opt. | 1.0 | 138.0 | 0.24 | 3.0 | 17280 | 0.007 |
| 5.1 | 242.9 | 0.70 | 6.2 | 17280 | 0.014 | ||
| 14 | 426.0 | 1.39 | 17.9 | 17280 | 0.039 | ||
| 24.7 (ZnCl2) | 5.5 | 0.69 | 45.6 | 2880 | 0.245 | ||
| Full range Opt. | 1.0 | 150.0 | 2.55 | 32.2 | 17280 | 0.071 | |
| 5.1 | 259.0 | 4.03 | 36.0 | 17280 | 0.079 | ||
| 14 | 402.0 | 3.59 | 46.5 | 17280 | 0.102 | ||
| 24.7 (ZnCl2) | 14.9 | 0.92 | 55.2 | 2880 | 0.297 | ||
| STOX | 1.0 | 126.0 | 2.57 | 4.0 | 222 | 0.078 | |
| 5.1 | 215.5 | 12.55 | 13.5 | 222 | 0.261 | ||
| 14 | 408.0 | 5.48 | 8.6 | 222 | 0.166 | ||
| 24.7 (ZnCl2) | 29.5 | 0.34 | 6.6 | 222 | 0.127 | ||
| 2 | MIMS (direct) | 1.0 | 153.7 | 3.45 | 52.4 | 1860 | 0.350 |
| STOX | 1.0 | 158.5 | 1.96 | 13.3 | 191 | 0.278 | |
| 3 | MIMS (Exet.) | 2.6 | 125.6 | 0.58 | 29.5 | 148 | 0.698 |
| 2.9 | 126.0 | 0.93 | 61.6 | 148 | 1.459 | ||
| 4.2 | 156.1 | 1.64 | 108.7 | 148 | 2.577 | ||
| 6.4 | 193.2 | 1.56 | 79.3 | 148 | 1.879 | ||
| 11.1 | 203.8 | 3.06 | 199.3 | 148 | 4.723 |
The O2 consumption rates (O2 Rate) measured at different O2 concentrations (O2 Conc.) and with different sensors and sampling frequencies (F) are summarized. For each rate measurement, standard errors (SE) and root mean square of the residuals (RMSRES) were calculated from equations 1 and 2. The potential rate detection limit of an assumed 24 hour incubation (Pot.Det.Lim.) was calculated from equation 3. Please note, a low RMSRES denotes a high precision, and potential rate detection limits are only based on precision and measuring frequency, but do not consider possible limitation from sensor drift or O2 contamination.