The invention provides a control method of an
ion chromatography three-column
suppressor. The control method comprises the following steps: (1) obtaining the
running time P1 of the three-column
suppressor in an equilibrium state; (2) judging whether the balance state
operation time P1 reaches the balance
column switching time T1 or not, not switching the position of the
suppressor column under the condition that P1 is less than T1, and switching the position of the suppressor column under the condition that P1 is equal to T1; (3) judging whether a sample introduction
signal is received or not, and repeating the step (2) when the sample introduction
signal is not received; turning to the step (4) when a sample introduction
signal is received; (4) sample injection detection is started, and the
operation time P2 of the three-column suppressor in the sample injection state is obtained; (5) judging whether the sample injection state
operation time P2 reaches the sample injection column
cutting time T2 or not, and under the condition that P2 is less than T2, not switching the suppressor column body; and under the condition that P2 is larger than or equal to T2, the position of the suppressor cylinder is switched, and the step (3) is repeated. The invention further discloses a control device of the
ion chromatography three-column suppressor and a computer readable storage medium.