Table A2.

The different packaging gas mixtures used for packaging of cod agar plates for growth screening, and the measured levels (%) of CO₂ and O₂ after 13 days of refrigerated 4 °C storage of at total storage period of three weeks.

Premix Packaging Gas	Gas Measured Day 13
60% CO2, 40% N2	53.1 ± 0.5% CO2, 0.5 ± 0.3% O2
40% CO2, 60% N2	34.8 ± 0.4% CO2, 0.3 ± 0.4% O2
60% CO2, 40% O2	51.4 ± 0.2% CO2, 44.9 ± 0.2% O2
40% CO2, 60% O2	32.3 ± 0.0% CO2, 63.7 ± 0.0% O2
100% N2	1.0 ± 0.2% CO2, 0.02 ± 0.0% O2
Air	0.3 ± 0.1% CO2, 20.3 ± 0.0% O2