Alternative for /replacement of suction head for Axios sample changer, for use with 40 mm steel rings only. Does not suck on the back of the sample but on the steel ring itself, creates a vacuum enclosed by suction head, steel ring and sample. With this suction head the handling of the sample is independent of the quality of the back of the sample; it also prevents bad (incomplete, porous) samples from being loaded. Only useable in combination with 40 mm steel rings for pressed power applications.