Fig. 3
Ethylene sensor calibration. a Ethylene (Membrapore) and ethylene oxide sensor (Solidsense) responses for different set ethylene flow rates represented as ethylene transfer rates (ETRset). b Linear regression of the calculated slopes in the measurement phases (closeup shown in (a)) to the corresponding ETRset with a mean R2 of 0.998 ± 0.001. Standard deviations are for n = 6 measurement phases. Calibration conditions: 250 mL RAMOS shake flask, 50 mL modified Gamborg’s B5 medium, 180 rpm shaking frequency, 50 mm shaking diameter and 25 °C