Table 1.

Test parameters (EVT-E1 and EVT-E2).

EVT	Parameters	Duration/exposure		No. samples
E1
	Vacuum 10-5 Pa	1 h	1.3 × 10-5 Pa	3
		1 wk	2.3 × 10-6 Pa	3
	Temperature oscillation 50 cycles
	-20 °C to +20 °C, 1 atm air	2 wk		3
	UV-C irradiation monochromatic	14 s	10 Jm-2	3
	254 nm, 1 atm air, 71.4 μW/cm2	2 min 20 s	100 Jm-2	3
		23 min 20 s	1000 Jm-2	3
	UV irradiation polychromatic	3 s (SOL2000)	1.44 kJm-2	3
	200-400 nm, 1 atm air	52 min (SOL2000)	1.5 × 103 kJm-2	3
		87 h (SOL2000)	1.5 × 105 kJm-2	3
	total number of samples EVT-E1			27
E2
	Vacuum 10-5 Pa (dark)	22 d		3
	Vacuum 10-5 Pa	22 d
	+		1.5 × 105 kJm-2
	UV irradiation polychromatic	244.5 h (SOL1000)
	(200-400 nm)			3
	Mars atmosphere 600 Pa (dark)	21 d		3
	Simulated CO2 Mars atmosphere	21 d
	600 Pa
	+	18 min (SOL2000) +
	UV irradiation polychromatic	10 d 3 h 40 min 48 s (SOL1000)
	(200-400 nm)		1.5 × 105 kJm-2	3
	total number of samples EVT-E2			12
Control
	Room temperature, dark, 1 atm air	2 mo		3