We have trialled multiple methods for recording M(t): using VSM mode allows for a very high density of points, which is important when the moment changes quickly at the beginning of the decay and at high temperatures (Fig. ). Fast DC scans (1 s scan time) can also result in a reasonably high density of data points if VSM is unavailable (Fig. ). Users should take care to avoid frictional heating, which can be an issue for VSM and fast DC scans, particularly at low temperatures; here, keeping the instrument wellmaintained (clean sample chamber, smooth sample rod bearings, sample rod and mount straight and not rubbing inside the sample space) and using smaller VSM amplitudes or slower DC scans can help reduce this effect if it arises. It is necessary to use autoranging, as the magnitude and time dependence of the magnetic moment of a sample is not known in advance, however we find it results in gaps and jumps in the decay curve (Fig. and Fig. ). When using autoranging for DC scans, we find that the timestamp of the first point for a new range is reported incorrectly and these points must be discarded. Given the lower density of points collected in DC mode, fixed ranges may be necessary, particularly for fast relaxing samples.