Advion Interchim Scientific puriFlash® Active Splitter for Prep-LC/MS Integration

Overview

The Advion Interchim Scientific puriFlash® Active Splitter is an engineered interface designed to enable robust, real-time coupling between preparative liquid chromatography (prep-LC) systems and mass spectrometers (MS). Unlike passive splitters—whose flow division relies solely on fixed capillary resistance and inherently generate backpressure—the Active Splitter employs a high-precision, pneumatically actuated switching valve to dynamically divert a defined volume of eluent from the main chromatographic stream into an auxiliary path leading to the MS detector. This active volumetric diversion eliminates pressure-dependent flow imbalance and ensures stable, reproducible split ratios across variable flow rates (0.1–100 mL/min), making it uniquely suited for high-flow prep-LC applications where conventional passive devices fail. The device operates on the principle of timed, discrete fluid displacement rather than continuous laminar resistance, thereby decoupling MS sensitivity requirements from system hydraulic constraints.

Key Features

• Active flow splitting via programmable 6-port switching valve with sub-millisecond actuation repeatability
• No backpressure generation—maintains consistent column inlet pressure regardless of split ratio or flow rate
• Split ratio digitally adjustable in real time (e.g., 1:10 to 1:1000) through Intersoft® X software without hardware reconfiguration
• Integrated dilution capability: auxiliary stream can be mixed with make-up solvent pre-MS to optimize ionization efficiency
• Chemically inert wetted path constructed from PEEK, stainless steel, and fused silica—compatible with aggressive solvents (e.g., THF, DCM, high-% TFA)
• Zero dead-volume design at valve manifold minimizes band broadening and carryover (<0.1% RSD over 100 injections)
• Supports both ESI and APCI sources; compatible with single quadrupole, triple quadrupole, and Q-TOF mass spectrometers

Sample Compatibility & Compliance

The puriFlash® Active Splitter is validated for use with all Interchim puriFlash® preparative columns (C18, silica, amino, cyano, phenyl-hexyl, and specialized chiral phases), as well as third-party columns up to 30 mm ID. It supports gradient elution from 5% to 95% organic modifier without flow-induced phase separation or valve clogging. System compliance includes adherence to ISO 9001-certified manufacturing protocols and compatibility with GLP/GMP environments when paired with audit-trail-enabled Intersoft® X software (21 CFR Part 11 compliant with electronic signature support). All materials meet USP Class VI biocompatibility standards and are non-leaching under typical LC-MS operating conditions.

Software & Data Management

Control and synchronization are fully integrated via Intersoft® X—a unified platform for method development, instrument orchestration, and data review. Within the software, users define mass-triggered collection logic using m/z windows, intensity thresholds, and co-detection criteria (UV + MS signal coincidence within ±1.5 s). Real-time spectral preview enables on-the-fly adjustment of split parameters during method optimization. Raw MS data (centroid or profile mode) and collected fraction metadata (retention time, m/z, UV absorbance, valve state log) are stored in vendor-neutral .mzML and .csv formats. Audit trails record all parameter changes, user logins, and fraction trigger events—enabling full traceability for regulatory submissions.

Applications

• Targeted isolation of natural products and synthetic intermediates directly from crude reaction mixtures
• High-throughput purification of peptide libraries with MS-guided deconvolution of overlapping peaks
• Metabolite identification workflows requiring parallel collection of parent drug and oxidative metabolites
• Process analytical technology (PAT) implementation in API purification campaigns
• Method development for challenging separations involving low-abundance analytes masked by matrix interferences
• Automated fraction re-injection for orthogonal 2D-LC-MS analysis

FAQ

How does the Active Splitter differ from traditional tee-based passive splitters?

It replaces fixed-resistance flow division with time-synchronized volumetric diversion—eliminating backpressure and enabling dynamic, software-controlled split ratios.
Can the device be used with non-Interchim prep-LC systems?

Yes—standard 1/16″ and 1/8″ tubing ports support integration with Gilson, Biotage, and other modular prep-LC platforms via appropriate fittings.
Is post-split dilution mandatory for ESI compatibility?

No—it is optional and configurable; the auxiliary line includes a dedicated solvent inlet for inline dilution only when required to reduce solvent load or enhance desolvation.
What is the minimum detectable m/z window resolution supported for triggering?

Triggering is based on full-scan or SIM data acquired at standard acquisition rates (1–10 Hz); resolution is determined by the connected mass spectrometer—not the splitter.
Does the valve require routine maintenance or replacement?

The valve is rated for >1 million cycles; no scheduled maintenance is required under normal operation, and wear parts are field-replaceable without recalibration.