“…Some years later, the procedure of the standard addition and dilution method was also successfully carried out using both the flow injection technique 12,13 and the continuous flow technique, 9 and a modification of this calibration approach under the name 'the standard addition and successive dilution method' was also reported. 14 Apart from their specific features, all the above calibration methods based on the dilution process reveal two drawbacks in common. Namely, the two separately diluted calibration solutions have to be diluted to the same extent after the same time has elapsed from the beginning of dilution.…”