Samples for the MicroMag and the MicroVSM can be prepared in roughly the same way. Sample material can be in the form of a powder, rock chip, or single mineral. The only real requirement is that it can fit onto the sample probes for each device. For the Micromag and the furnace of the MicroVSM, the samples can only weigh a few 10s of milligrams. The MicroVSM can also take larger samples, including 1-cc cubes, P-1 boxes, and the gelcaps.
In the image on the left, the sample probe for the MicroMag is shown, along with a small glass plate with a sample on it (held by tweezers). The sample probe is very delicate!