Patent ID: 11940430
Assignee: SHIMADZU CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A suppressor system comprising:
a suppressor having an eluent flow path through which an eluent flows and a suppression solution flow path through which a suppression solution flows, the eluent flow path and the suppression solution flow path being provided so as to be separated by an ion exchange membrane;
a circulation flow path that connects an inlet and an outlet of the suppression solution flow path of the suppressor to circulate the suppression solution;
an ion exchange resin column provided on the circulation flow path and including a resin accommodation unit through which the suppression solution flowing out of the suppressor flows and an ion exchange resin, which is acidic or alkaline, accommodated in the resin accommodation unit; and
a life detector configured to determine a life of the ion exchange resin in the ion exchange resin column,
wherein the ion exchange resin column has a longitudinal direction,
wherein the life detector includes:
a light source for irradiating light from a direction across the longitudinal direction of the ion exchange resin column toward the ion exchange resin, and
a light detector for detecting light from the light source transmitted through the ion exchange resin column, and

wherein the life detector is configured to determine the life of the ion exchange resin in the ion exchange resin column by detecting:
that an output signal of the light detector exceeds a predetermined threshold due to a decrease in a volume of the ion exchange resin in the longitudinal direction, or
that the output signal of the light detector is below the predetermined threshold due to an increase in a volume of the ion exchange resin in the longitudinal direction.