For routine applications we offer the upgrade with an automatic sample changer (ASC) for up to 20 samples and reference materials, also in different crucible types.
A dual frequency susceptibility sensor can be used to test the possibility of distinguishing the multi-domain grains most likely derived from natural rock, from the single-domain (larger frequency dependent) grains of soil affected by human-activity. Human activity, weathering and burning, favor the conversion of magnetic particles to a smaller size characterized by high frequency dependent susceptibility and thus measurements of the susceptibility at two or more frequencies can be used as a guide for the location of areas of archaeological interest. The "frequency dependent susceptibility" (FDS%=χfd%=((χlow-χhigh)/χlow) x 100) can be used as a relative measure distinguishing ancient human activity from the modern one. It can provide information on the extent and dating of human occupation (stratigraphy) and even predict the potential of a site for magnetometer survey, by examining the average level of susceptibility of the topsoil and the corresponding contrast between features and their soil context.