The meat and liquor of six oysters was homogenised together using a Waring blender (Waring Laboratory Science, Connecticut, United States of America) on a low setting for 30 s and analysed using a Eutech 510 pH meter (Thermo Fisher Scientific, Madison, United States of America) fitted with a pH electrode (IJ44C, Ionode, Queensland, Australia). Prior to each analysis, the instrument was subjected to a three point calibration using room temperature calibration solutions.