Sample supply system of an analytical instrument

JP2025522966A5Pending Publication Date: 2026-07-13AGILENT TECHNOLOGIES INC
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Patent Information

Application Number
JP2025500855
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-07-15
Filing Date
2023-07-11
Publication Date
2026-07-13

AI Technical Summary

Technical Problem

Existing sample supply systems for ICP spectrometers and similar analytical instruments face inefficiencies due to the need for all samples to pass through dilution modules, even when not required, leading to reduced productivity and increased analysis time, especially for samples outside the calibration range.

Method used

A sample supply system with a dual-mode operation that allows undiluted samples to bypass the dilution module for direct analysis and enables inline dilution only for samples that need it, using a valve assembly and fluid pumps to control sample and diluent flow, minimizing the impact on productivity.

Benefits of technology

The system enhances productivity by allowing undiluted samples to be analyzed quickly and reducing the size of the external sample reservoir, while ensuring accurate inline dilution for out-of-range samples, thus optimizing the analysis process.

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Abstract

The sample supply system of the analytical instrument provided by the present invention has one or more valves, a valve assembly that receives an external sample from a sample source, and an external sample reservoir connected to a sample dilution and confluence section via the valve assembly. The valve assembly is configured to selectively allow (i) the flow of the external sample from the sample source to the external sample reservoir and (ii) the flow of the external sample from the external sample reservoir to the sample dilution and confluence section. It includes an external sample reservoir, a first fluid pump that controls the flow of the external sample from the external sample reservoir to the sample dilution and confluence section, a second fluid pump that controls the flow of the diluent to the sample dilution and confluence section and dilutes the external sample to generate a diluted sample, and an analytical sample reservoir that supplies the contained analytical sample to the analyzer of the analytical instrument. The analytical sample reservoir is connected to the sample dilution and confluence section via the valve assembly. The valve assembly is configured to selectively allow (i) the flow of the external sample that bypasses the external sample reservoir along the continuous flow path from the sample source to the analytical sample reservoir and (ii) the flow of the diluted sample from the sample dilution and confluence section to the analytical sample reservoir.
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