A method is described for treating a wafer having at least a surface layer of semiconductor material, with the surface of this surface layer having undergone a chemical-mechanical polishing step followed by an RCA cleaning step. To improve the erection effect the method further comprises gently constricting the penile portion or the prolongation thereof to restrict the venous blood flow in the penile portion, and then stimulating the constricted penile portion to cause contraction of the penile portion to at least further restrict the blood flow leaving the penis to achieve erection. Based on the results of the comparison, weighting coefficients are formed for each pixel of each of the n\u22121 high frequency channels, and the assembling of the output image is made by summing each pixel from the low frequency channel with all products of the corresponding pixels of n\u22121 high frequency channels by their weighting coefficients. A determiner checks propriety of the conversion lens device according to accessory device data received by the reception unit, and produces checking information. The opposite procedure is used to demount the used blade from the scalpel and encase it in the original blade package for disposal in a sharps container.