Metrohm 850 Peak Thinking™ Series Ion Chromatograph

Overview

The Metrohm 850 Peak Thinking™ Series Ion Chromatograph is a fully modular, intelligent laboratory-scale ion chromatography system engineered for high-reproducibility anion and cation analysis across diverse matrices—from ultrapure water and pharmaceutical excipients to complex industrial effluents and food extracts. Built upon Metrohm’s proprietary “thinking component” architecture, the system implements real-time hardware self-diagnosis, adaptive flow optimization, and embedded analytical metadata management. Its core separation principle relies on suppressed conductivity detection following ion-exchange chromatography, with dual independent channels enabling simultaneous or sequential anion/cation determination. The system operates without external inert gas purging—eluent and sample streams undergo integrated membrane-based online degassing—reducing operational complexity while maintaining baseline stability under variable ambient conditions. Designed for long-term regulatory compliance, the 850 meets essential requirements for GLP, GMP, and ISO/IEC 17025 environments through traceable electronic records, secure user access control, and full audit trail functionality.

Key Features

• Fully non-metallic fluidic path constructed from chemically inert PEEK, PTFE, and ceramic components—ensuring compatibility with aggressive eluents (e.g., HNO₃, KOH, methanesulfonic acid) across pH 0–14.
• iPump intelligent dual-piston reciprocating pump with embedded EEPROM chip: autonomously calibrates flow rate per application method, logs maintenance intervals, and interfaces seamlessly with MagIC Net™ for predictive service alerts.
• MSM II chemical suppressor: achieves <0.2 nS/cm baseline noise, zero equilibration time, full compatibility with organic modifiers (up to 100% acetonitrile/methanol), and rated for continuous operation at 2.5 MPa—validated for ≥10 years under routine use.
• iColumn smart chromatographic columns: each equipped with RFID-enabled memory storing column type, lot number, usage history, pressure limits, and optimal eluent parameters—enabling cross-system method portability and full analytical traceability.
• iDetector conductivity detector with Faraday-cage shielding, temperature-stabilized cell (±0.01 °C), and onboard DSP processor: stores up to ten reference chromatograms in internal memory for rapid software validation and operator training without external data transfer.
• Dual-channel architecture supporting parallel anion and cation analysis using independently controlled pumps, detectors, and suppressors—eliminating channel cross-contamination and reducing total cycle time by up to 40% versus sequential systems.

Sample Compatibility & Compliance

The 850 Peak Thinking™ system accommodates undiluted, unfiltered, or minimally prepared samples—including viscous biological fluids (milk, fruit juice), alkaline digestates (NaOH extracts), particulate-laden wastewater, and high-salinity brines—via its integrated MISP platform. Automated inline sample treatment modules support ultrafiltration (1 kDa–100 kDa MWCO), dialysis, matrix elimination (Ag/H cartridges), pH neutralization, and preconcentration (10×–100×). All hardware and software functions comply with FDA 21 CFR Part 11 (electronic signatures, audit trail, role-based permissions), EU Annex 11, and ISO/IEC 17025:2017 clause 7.7 (traceability of measurement results). System qualification documentation—including IQ/OQ/PQ protocols, calibration certificates for conductivity cell and temperature sensors, and suppressor performance reports—is provided as standard.

Software & Data Management

MagIC Net™ v3.x serves as the central control, acquisition, and reporting environment. It features a dual-mode interface: “One-Click Analysis” for routine QC operators and “Expert Mode” for method development, peak integration tuning, and custom calculation scripting (e.g., speciation, charge balance, ion balance error). All raw data, processing methods, instrument logs, and electronic signatures are stored in a tamper-evident SQL database with automatic daily backup and optional cloud synchronization. Audit trails record every user action—including method modification, result reprocessing, and report export—with immutable timestamps and operator IDs. Validation packages include installation qualification (IQ), operational qualification (OQ), and performance qualification (PQ) test scripts aligned with ASTM D4327, ISO 14911, and USP <645>.

Applications

The 850 delivers validated performance in regulated and research settings: quantification of low-level anions (F⁻, Cl⁻, NO₂⁻, Br⁻, NO₃⁻, PO₄³⁻, SO₄²⁻) in drinking water per EPA Method 300.0; cation profiling (Li⁺, Na⁺, NH₄⁺, K⁺, Mg²⁺, Ca²⁺) in battery electrolytes and semiconductor process chemicals; organic acid analysis (acetate, formate, oxalate) in fermentation broths; and halide impurity testing in APIs per ICH Q2(R2). Its MISP capability enables direct injection of dairy products (lactose interference removal), biofuels (glycerol matrix suppression), and soil leachates (Fe³⁺/Al³⁺ chelation)—eliminating manual pretreatment steps that introduce variability and contamination risk.

FAQ

Does the 850 require helium or nitrogen for degassing?
No—integrated membrane-based online degassers eliminate the need for external inert gases for both eluent and sample streams.
Can iColumn units be used interchangeably between different Metrohm IC systems?
Yes—iColumns retain full configuration and usage history via embedded RFID; they auto-configure when installed on any compatible Metrohm Professional IC platform.
Is MagIC Net™ compliant with FDA 21 CFR Part 11?
Yes—version 3.x includes full electronic signature support, granular audit trail, and configurable user roles meeting all technical and procedural requirements.
What is the maximum operating pressure for the MSM II suppressor?
2.5 MPa (362 psi), certified for continuous operation under gradient elution and high-backpressure column conditions.
How many samples can the 858 Sample Processor handle per batch?
Standard tray capacity is 148 positions, plus dedicated wash stations; optional extended trays support up to 288 positions with automated dilution and spiking routines.