In all fairness I have never found the need for a colour analiser. All boxes of paper vary a little so you have to re-calibrate for each one, and even next batch of colour developer may be slightly different so the calibration goes out of the window again. . I do use a wallet of colour gels made by Kodak and whilst they are not much good for Fiji paper which I use now I use them a a guide if the colour balance is off course. Increasing or decreasing the exposure depending on what filtration I add or subtract. It all comes with experience.