Hi Jorge, Offset presses are both highly standardizable but also unstable, so it's better to think of the task as ongoing, continuous process control rather than a single act of calibration that is repeated occasionally. There is a range of tools in a wide variety of prices, but the basics always include some form of strip-reading spectrophotometer, software that tracks the Lab values of solids, tints, overprints, gray balance and print contrast and the ability to make plate correction curves, and training. I would say that a budget for this would start at somewhere north of $10,000 US plus expenses for one press and training for a press operator and a prepress person and go up from there. Dismiss any suggestion that an annual or semiannual "fingerprinting" or "certification" is what you need--these are quite close to worthless for assuring consistent color output. Mike Strickler MSP Graphic Services