the rhythm between full and empty is the principle that inspires Castilgioni in the research of a significant graphic design to characterize a transparent conical glass, defined in its dimensions by Ritzenhoff Cristall. Probably considered the most used symbol in the barcode, it is realized in white over the bluish color of the glass, repeated three times to be seen continuously; the numbering 001996 is arbitrary and indicates the year of production. The introduction of the milk (hot white) on the glass contrasts, although in a very dimly way, with the image of the code (cold white)