For all the following measurements, we did not use pathlength correction, and kept the temperature setting to room temperature (20-25°C). The bandpass width is fixed at 16 nm. Bottom optics are used.
Before cell measurements were taken, three different calibration protocols were done.
1) OD600 Reference Point - LUDOX Protocol
LUDOX CL-X (45% colloidal silica suspension) was used to convert the Absorbance at 600 nm as obtained from the plate reader into a comparable OD600 measurement as obtained from a spectrophotometer. Here, pathlength correction is especially important to be switched off so as to not provide correction for the volume of sample in the 96-well plate.