NITTY-GRITTY PASSI TEST

Passi Test is a tool designed to assess the real quality of stainless steel. It consists of a Òprobe penÓ, which contains the electrochemical solution, and an external storage unit. By pressing the probe pen on the surface, Passi Test measures the the open-circuit potential and nobility of the metal, thus measuring its corrosion resistance. The test, which is neither destructive nor damaging, is fast (the result is given in 15 seconds) and numerical: while other, purely chemical passivation tests are based on colour interpretation (ferrocyanide test), thus offering a strongly subjective datum that is often distorted by superficial impurities,ÊPassi Test releases an exact and not disputable numerical value. TheÊPassi TestÊsystem is calibrated on Aisi 304 and 316 stainless steel, with zero as its discriminating point: if the value is higher than zero, then the stainless steel is passivated; if the value is lower than zero, then passivation is either scarce or non-existent. As such, it is possible to compare different kinds of stainless steel: the higher than zero is the value, the better the passivation of the sample; the lower than zero is the value, the worse is the passivation of the tested stainless steel. Passitest version is the read-only version of the device, giving the result on display.