Table 2. List of experimental conditions.
| Condition | Mass Flow Rate (mol s-1) | Wall Thickness (μm) | Number of Active Scavenger Lines | Frequency (h-1) | Time during cycle (min) |
|---|---|---|---|---|---|
| P | 0 | - | 0 | - | Constant |
| IHon | 2 x 10−6 | 30 | 1 | 0.5 | 60 |
| IHoff | 2 x 10−6 | 30 | 1 | 0.5 | 60 |
| CH | 0.7 x 10−6 | 30 | 1 | - | Constant |
| rCH | 0.07 x 10−6 | 30 | 1 | - | Constant |
| wCH | 0.7 x 10−6 | 60 | 1 | - | Constant |
| 2CH | 0.7 x 10−6 | 30 | 2 | - | Constant |
P: Physioxia; IHon: Intermittent hypoxia while 2 x 10−6 mol s-1 Na2SO3 is flowing for an hour; IHoff: Intermittent hypoxia while scavenger stopped flowing for an hour; CH: Constant chronic hypoxia of flowing 0.7 x 10−6 mol s-1 Na2SO3; rCH: Constant reduced mass flow rate of oxygen scavenger flowing at 1/10th the speed of CH; wCH: Constant hypoxia with increased thickness of the PDMS wall between the scavenging channel and tissue chamber; 2CH: Constant hypoxia with two active scavenger line