Fraction collector

Patent metadata

Field	Value
Publication number	US-2016288016-A1
Application number	US-201615072618-A
Country	US
Kind code	A1
Filing date	Mar 17, 2016
Priority date	Apr 3, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

A moving section that moves in the horizontal plane direction at above a collection container section where collection containers are set is provided with a nozzle holding section for holding a nozzle, and a waste port holding section for holding a waste port. The moving section is capable of moving the nozzle holding section or the waste port holding section. Accordingly, one of a state where the waste port is at a position immediately below the tip of the nozzle and a state where the waste port is not at the position immediately below the tip of the nozzle may be achieved.

First claim

What is claimed is:

1 . A fraction collector comprising:
a collection container section for setting a collection container whose top is open so as to collect a sample flowing out of a detector of a liquid chromatograph; a moving section for moving in a horizontal plane direction at above the collection container section; a nozzle that is connected to a channel through which a liquid flowing out of the detector flows; a nozzle holding section, provided at the moving section, for holding the nozzle in such a way that a tip of the nozzle faces downward; a waste port, whose top is open, for leading a waste liquid to a drain; a waste port holding section, provided at the moving section, for holding the waste port; and a drive mechanism for moving the nozzle holding section or the waste port holding section so as to selectively achieve a state where the waste port is at a position immediately below the tip of the nozzle or a state where the waste port is not at the position immediately below the tip of the nozzle.

2 . The fraction collector according to claim 1 , further comprising:
a collection operation section for performing a collection operation of achieving, when a start point of a peak originating from a sample component is detected based on a detection signal of the detector, the state where the waste port is not present at the position immediately below the nozzle, before a liquid at a part corresponding to the peak reaches the tip of the nozzle, and of causing the liquid at the part corresponding to the peak to drop from the tip of the nozzle into a collection container for collecting a component corresponding to the peak; and a purge operation section for performing, after the collection operation is completed, a purge operation of achieving the state where the waste port is present at the position immediately below the nozzle, and of causing a liquid not containing a sample component to drop from the tip of the nozzle.

3 . The fraction collector according to claim 2 , wherein the purge operation section performs the purge operation in a state where the moving section is placed at a position at which a next sample component will be dropped into a collection container for collecting the next sample component.

4 . The fraction collector according to claim 3 ,
wherein the waste port holding section is formed from an arm, extending in a horizontal direction, for holding the waste port at a position lower than the tip of the nozzle, and wherein the drive mechanism moves, by rotating the arm, the waste port to the position immediately below the tip of the nozzle and to a position different from the position immediately below the tip of the nozzle.

5 . The fraction collector according to claim 2 ,
wherein the waste port holding section is formed from an arm, extending in a horizontal direction, for holding the waste port at a position lower than the tip of the nozzle, and wherein the drive mechanism moves, by rotating the arm, the waste port to the position immediately below the tip of the nozzle and to a position different from the position immediately below the tip of the nozzle.

6 . The fraction collector according to claim 1 ,
wherein the waste port holding section is formed from an arm, extending in a horizontal direction, for holding the waste port at a position lower than the tip of the nozzle, and wherein the drive mechanism moves, by rotating the arm, the waste port to the position immediately below the tip of the nozzle and to a position different from the position immediately below the tip of the nozzle.

Assignees

• Shimadzu Corp

Inventors

• Okoba Tsutomu
• Iriki Takayuki

Classifications

• B01D15/24

  relating to the treatment of the fractions to be distributed · CPC title

• G01N30/82

  Automatic means therefor · CPC title

• B01D15/247 Primary

  Fraction collectors · CPC title

• G01N30/80 Primary

  Fraction collectors · CPC title

• B01D15/10

  characterised by constructional or operational features · CPC title