Micro-Splitter Valves

Micro-Splitter Valves

IDEX Micro-Splitter Valves enable precise flow splitting in LC-MS, multi-detector systems, fraction collection, and post-column reaction workflows. These valves allow controlled distribution of effluent streams to multiple destinations, helping optimize detector sensitivity while maintaining consistent chromatographic performance.

Standard micro-splitter valves are designed for installation on the effluent side of the detector flow cell and support operating pressures up to 800 psi (55 bar). For higher-pressure applications, graduated micro-splitter models are available with ratings up to 4,000 psi (276 bar), providing added flexibility for UHPLC and advanced analytical setups.

Multiple thread configurations are offered to match common laboratory tubing standards, including 1/4-28 and 10-32. A specialized 10-32 / 6-32 option is also available for capillary tubing applications, making these valves suitable for both conventional LC systems and microfluidic workflows.

Chrom Tech stocks a curated selection of IDEX micro-splitter valves and compatible fittings to support reliable flow control and streamlined system integration. Many popular configurations are available and ready to ship.

Key Definitions â–¸
Micro-Splitter Valve
A precision flow-control valve designed to divide a single liquid stream into multiple paths, commonly used in LC-MS, multi-detector systems, fraction collection, and post-column reactions.
Effluent Side
The downstream portion of a chromatography system located after the detector flow cell, where splitter valves are typically installed to distribute analyzed sample streams.
Graduated Micro-Splitter
A high-pressure splitter valve configuration rated up to 4,000 psi (276 bar) that allows adjustable flow division for UHPLC and advanced analytical applications.
Threaded Ports (1/4-28, 10-32, 6-32)
Common laboratory fitting thread standards used to connect tubing and capillaries. Micro-splitter valves are available in 1/4-28 and 10-32 formats, with 10-32 / 6-32 options for capillary-scale fluid paths.
Multi-Detector System
An analytical setup where a single chromatographic stream is divided to feed multiple detectors, enabling parallel measurement of different properties from the same sample.
Frequently Asked Questions â–¸
What are IDEX micro-splitter valves used for?
Micro-splitter valves are used to divide a single chromatographic effluent stream into multiple flow paths. They are commonly installed in LC-MS systems, multi-detector setups, fraction collectors, and post-column reaction workflows to optimize signal response and enable parallel analysis.
Where should a micro-splitter valve be installed?
Standard micro-splitter valves are typically installed on the effluent side of the detector flow cell. This placement allows controlled flow distribution after analysis while maintaining stable upstream chromatographic conditions.
What pressure ratings are available?
Standard IDEX micro-splitter valves are rated up to 800 psi (55 bar). High-pressure graduated models are available for UHPLC applications and can withstand pressures up to 4,000 psi (276 bar).
Which thread sizes are supported?
Micro-splitter valves are available in 1/4-28 and 10-32 threaded configurations. A 10-32 / 6-32 option is also offered for capillary tubing applications, supporting both conventional LC and microfluidic setups.
Can these valves be used with LC-MS systems?
Yes. IDEX micro-splitter valves are commonly used in LC-MS workflows to direct a portion of the effluent to the mass spectrometer while routing remaining flow to waste, fraction collection, or secondary detectors.