US 11,940,430 B2
Suppressor system, and method for determining life of ion exchange resin column
Yukio Oikawa, Kyoto (JP); and Hiroshi Tanaka, Kyoto (JP)
Assigned to SHIMADZU CORPORATION, Kyoto (JP)
Appl. No. 15/574,404
Filed by Shimadzu Corporation, Kyoto (JP)
PCT Filed May 22, 2015, PCT No. PCT/JP2015/064689
§ 371(c)(1), (2) Date Nov. 15, 2017,
PCT Pub. No. WO2016/189574, PCT Pub. Date Dec. 1, 2016.
Prior Publication US 2018/0136176 A1, May 17, 2018
Int. Cl. B01D 15/36 (2006.01); B01D 35/143 (2006.01); B01D 61/24 (2006.01); B01D 69/02 (2006.01); G01N 30/02 (2006.01); G01N 30/96 (2006.01)
CPC G01N 30/96 (2013.01) [B01D 15/363 (2013.01); B01D 69/02 (2013.01); G01N 30/02 (2013.01); B01D 35/143 (2013.01); B01D 2325/42 (2013.01); G01N 2030/965 (2013.01)] 8 Claims
OG exemplary drawing
 
8. A method for determining a breakthrough point of an ion exchange resin in an ion exchange resin column, comprising:
irradiating light from a direction across a longitudinal direction of the ion exchange resin column, which includes a resin accommodation unit in which the ion exchange resin is accommodated, toward the ion exchange resin;
detecting the irradiated light transmitted through the ion exchange resin column by a light detector;
detecting a volume change of the ion exchange resin in the resin accommodation unit, which occurs when the ion exchange resin reaches the breakthrough point by detecting that an output signal of the light detector exceeds a predetermined threshold or by detecting that the output signal of the light detector is below a predetermined threshold; and
determining the breakthrough point of the ion exchange resin by detecting the volume change of the ion exchange resin.