The volumes of the blood samples in experiment 1 were fairly consistent (3.04 ± 0.1 g). The data does not indicate that the sample weights were affected by whether the sample was taken after long intervals (60min; 3.10 ± 0.31 g) or short intervals (2min; 3.13 ± 0.37 g). The IceSampler internal clock lost 4.6 ± 0.35 s/h. A higher accuracy can be obtained by calibrating the internal clock at 4–7 ◦C, which was the operating temperature in this experiment.