In order to validate the method, we investigate a very small fragment of a crystalline material that is meant to mimic other specimens of a miniscule amount. An irregular 2.1 mg crystallite of SnTe is chosen. SnTe is a narrow gap semiconductor, the sole representative of the so called topological crystalline isolators . The investigated material was grown using the self-selecting vapour growth method . At room temperature its magnetic susceptibility is approximately SnTe = -4.6 × 10 -7 emu/g/Oe (which ties well with our arbitrary taken magnitude of  of SRDM), but most importantly for the validation tests, SnTe shows a very strong temperature dependence. We benchmark SnTe(T) first. To this end we measure a 58 mg large piece of the material, indicated in Figure by the grey arrow. For this measurement, this large crystallite is fixed inside the S3 narrowed straw.