Automatic solid phase extraction device with interchangeable nozzle holder head
First Claim
1. Automatic solid phase extraction apparatus, comprising:
- a support frame having a base and an overhead support spaced above the base;
a sample rack at a first position in the base underlying the overhead frame, a first set of test tubes arranged in said sample rack;
a shift rack mounted in a second position in the base for supporting solid phase extraction tubes arranged at a predetermined pitch in the shift rack;
an x-, y- and z-direction transport mechanism mounted on said overhead support;
a head adjustably mounted on said transport mechanism for movement in three orthogonal directions relative to said base;
a single needle holder removably supported on the base, a single needle nozzle attached to said needle holder for receiving sample solution one at a time from said first set of test tubes arranged in said sample rack and for injecting sample solution into said solid phase extraction tubes on said shift rack;
a multiple linked needle holder removably mounted on said base, a plurality of needle nozzles attached to said multiple linked needle holder for simultaneously supplying said solid phase extraction tubes with solvent;
said head having engaging means for releasably engaging a selected needle holder and transporting said needle holder to a selected rack; and
said head having a plurality of flow rate control pumps for alignment with respective needle nozzles when a respective needle holder is secured to said head for supplying solvent to said needle nozzles, each flow rate control pump being switchable between intake and discharge directions.
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Accused Products
Abstract
When conducting preprocessing to extract targeted components sample solution, the purpose is to be able to conduct the processing in a shortened length of time by greatly shortening the entire processing time, even if the number being processed is increased. A single needle holder, to which a single needle nozzle is attached to take sample solution into test tubes arranged in a sample rack and inject the sample solution into solid phase extraction tubes, and a multiple linked needle holder for injecting solvent, to which multiple needle nozzles are attached to simultaneously supply multiple solid phase extraction tubes with solvent, are mounted interchangeable on a head, the movement of which can be controlled in the directions of three orthogonal axes; and when aforementioned needle holders are mounted on said head, flow rate control pumps, which are switchable between the intake and discharge directions, are mounted through the piping which connects those needle nozzles with the solvent supply sources.
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Citations
6 Claims
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1. Automatic solid phase extraction apparatus, comprising:
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a support frame having a base and an overhead support spaced above the base; a sample rack at a first position in the base underlying the overhead frame, a first set of test tubes arranged in said sample rack; a shift rack mounted in a second position in the base for supporting solid phase extraction tubes arranged at a predetermined pitch in the shift rack; an x-, y- and z-direction transport mechanism mounted on said overhead support; a head adjustably mounted on said transport mechanism for movement in three orthogonal directions relative to said base; a single needle holder removably supported on the base, a single needle nozzle attached to said needle holder for receiving sample solution one at a time from said first set of test tubes arranged in said sample rack and for injecting sample solution into said solid phase extraction tubes on said shift rack; a multiple linked needle holder removably mounted on said base, a plurality of needle nozzles attached to said multiple linked needle holder for simultaneously supplying said solid phase extraction tubes with solvent; said head having engaging means for releasably engaging a selected needle holder and transporting said needle holder to a selected rack; and said head having a plurality of flow rate control pumps for alignment with respective needle nozzles when a respective needle holder is secured to said head for supplying solvent to said needle nozzles, each flow rate control pump being switchable between intake and discharge directions. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification