Metrohm 930 Compact Intelligent Integrated Ion Chromatography System

Overview

The Metrohm 930 Compact Intelligent Integrated Ion Chromatography System is a modular, high-reliability platform engineered for routine and method-development applications in regulated and research laboratories. Based on suppressed conductivity detection with optional UV/Vis or amperometric detection compatibility, the system implements classical ion-exchange chromatography principles—separating ionic and highly polar analytes (anions, cations, organic acids, amines) via gradient or isocratic elution on packed analytical columns. Its architecture integrates pump, injector, column oven, detector, and suppressor into a single compact chassis, minimizing extra-column dispersion and enhancing retention time stability. Designed for continuous unattended operation, the 930 Compact supports full GLP/GMP compliance through hardware-level audit trails, electronic signatures, and parameter locking—meeting requirements of FDA 21 CFR Part 11, ISO/IEC 17025, and ASTM D4327/D6919.

Key Features

• Intelligent component recognition: All modules (pump, autosampler, detector, suppressor) are auto-identified upon connection; method parameters—including flow rate, temperature, and eluent composition—are dynamically loaded and validated against hardware limits.
• Multi-range quantification via MiPT (Micro-Partial Loop Technique): Enables calibration across four orders of magnitude (10 µg/L to 100 mg/L) using a single standard solution, eliminating manual dilution series and reducing pipetting error.
• STREAM (Suppressor Regeneration Effluent-Assisted Washing Technology): Recycles detector effluent to regenerate the chemical suppressor, eliminating dedicated regeneration fluid lines and reducing reagent consumption by up to 70% versus conventional setups.
• Integrated eluent generation via optional 941 Eluent Production Module: Synthesizes carbonate-, hydroxide-, or methanesulfonate-based eluents online from ultrapure water (or municipal tap water with optional pretreatment), enabling stable retention times over multi-day sequences without manual eluent preparation.
• Modular detector compatibility: Supports conductivity detection (standard), UV/Vis (200–400 nm), and pulsed amperometric detection (PAD) for carbohydrates and amino acids—all with identical mechanical mounting and software integration.
• Space-optimized layout: All core components occupy <0.4 m² footprint; column oven accommodates up to two 250 mm columns with independent temperature control (0–80 °C, ±0.2 °C reproducibility).

Sample Compatibility & Compliance

The 930 Compact handles complex, undiluted matrices via seamless integration with Metrohm’s MISP (Metrohm Inline Sample Preparation) technologies: Inline ultrafiltration (for protein-rich biofluids and wastewater), inline dialysis (for high-salt samples), and inline dilution (for concentrated industrial brines). These eliminate offline filtration, centrifugation, or manual dilution steps—reducing contamination risk and analyst variability. The system complies with ISO 10304-1 (water anion analysis), ISO 14911 (cation analysis in environmental samples), USP (conductivity testing of purified water), and EPA Methods 300.0, 317.0, and 321.8. All hardware and software functions support full traceability: method versioning, raw data archiving, user access logs, and change history per analysis sequence.

Software & Data Management

MagIC Net™ v4.x provides full instrument control, sequence scheduling, real-time chromatogram visualization, peak integration, and report generation in English, German, French, Spanish, and Chinese interfaces. It enforces role-based permissions (analyst, supervisor, administrator), enforces electronic signatures for critical actions (method validation, result approval), and maintains immutable audit trails compliant with FDA 21 CFR Part 11 Annex 11. Raw data (.mcd files) are stored in vendor-neutral formats (CSV, PDF/A-2), with optional LIMS connectivity via ASTM E1578-compliant drivers. Batch processing supports automated calibration curve fitting (linear, quadratic, weighted), spike recovery calculations, and QC flagging based on user-defined acceptance criteria (e.g., %RSD ≤ 3%, recovery 85–115%).

Applications

• Environmental monitoring: Quantification of F⁻, Cl⁻, NO₂⁻, Br⁻, NO₃⁻, PO₄³⁻, SO₄²⁻, and AsO₄³⁻ in drinking water, surface water, and leachates per ISO 10304-1 and EPA 300.1.
• Pharmaceutical quality control: Counter-ion profiling (Na⁺, K⁺, Ca²⁺, Mg²⁺) in APIs; residual acetate or citrate in biologics; chloride in saline formulations.
• Food & beverage safety: Nitrite/nitrate in cured meats; sulfite in wines; phosphate additives in dairy products; ammonium in infant formula.
• Power generation: Anion impurities (Cl⁻, SO₄²⁻, acetate) in boiler feedwater per ASTM D4582; cation contaminants (Fe²⁺/³⁺, Cu²⁺) in condensate.
• Electrolyte analysis: Li⁺, PF₆⁻, BF₄⁻, TFSI⁻ in lithium-ion battery electrolytes using PAD and conductivity dual-detection modes.

FAQ

Can the 930 Compact operate without external eluent reservoirs?
Yes—when coupled with the 941 Eluent Production Module, it generates hydroxide, carbonate, or methanesulfonate eluents on-demand from deionized water, eliminating manual eluent preparation and storage.
Is method transfer possible between 930 Compact and higher-end Metrohm systems (e.g., 940 Professional)?
Yes—MagIC Net methods are fully portable across Metrohm IC platforms; column dimensions, flow rates, and gradient profiles retain identical retention behavior due to consistent fluidic design and dwell volume calibration.
Does STREAM require special suppressor hardware?
No—STREAM is enabled via firmware-controlled valve sequencing and is compatible with all Metrohm high-capacity suppressors (e.g., Metrosep C 4–250, Metrosep A Supp 17–250).
How is data integrity ensured during long-term unattended runs?
All acquisitions are timestamped, checksum-verified, and written directly to non-volatile storage; power-fail recovery resumes sequences from last completed injection without data loss.
What sample introduction options support MISP techniques?
The 863 Compact IC Autosampler (with optional cooling, filtration, and six-port valve) is certified for all MISP workflows including Inline Ultrafiltration (UF), Dialysis (Dialyzer), and Dilution (Dilutor) modules.