Metrohm OMNIS Advanced Automatic Potentiometric Titrator
| Brand | Metrohm |
|---|---|
| Origin | Switzerland |
| Manufacturer | Metrohm AG |
| Product Type | Imported Instrument |
| Model | OMNIS |
| Instrument Category | General-Purpose Potentiometric Titrator |
| Application Scope | Universal |
| Measurement Range | –2400 to +2400 mV |
| Meter Accuracy | ±0.2% of full scale |
| Meter Resolution | 0.1 mV |
| Titration Accuracy | ±0.2 mV |
| Titration Resolution | 1 part in 100,000 |
Overview
The Metrohm OMNIS Advanced Automatic Potentiometric Titrator is a modular, fully integrated electrochemical analysis platform engineered for precision, reproducibility, and regulatory compliance in modern quality control (QC), research, and routine analytical laboratories. Based on the fundamental principle of potentiometric endpoint detection—measuring potential difference across a working electrode (e.g., pH, redox, ion-selective) versus a reference electrode—the OMNIS system delivers traceable, high-resolution titration data under controlled reagent delivery and real-time potential monitoring. Unlike legacy single-channel titrators, OMNIS implements a parallel processing architecture capable of concurrent analysis of up to four samples without manual intervention, significantly increasing throughput while maintaining metrological integrity per ISO/IEC 17025 and ASTM E2081 guidelines.
Key Features
- Quad-channel parallel titration capability: Four independent workstations operate simultaneously with automatic queue management—samples initiate upon workstation availability, eliminating idle time.
- 3S Adapter System (Safe, Secure, Smart): Patented reagent handling interface featuring RFID-embedded caps for automatic reagent identification, concentration validation, expiry tracking, and audit-ready metadata logging—fully compliant with FDA 21 CFR Part 11 electronic record requirements.
- Graphical drag-and-drop software interface: Hardware components rendered as interactive icons; method templates auto-filter irrelevant parameters based on user-defined chemistry (e.g., acid-base, redox, precipitation, complexometric).
- Modular scalability: Start with a base titrator unit; expand via plug-in modules—including additional burettes (up to five parallel titrations), measurement input cards (pH, mV, temperature, conductivity), and robotic sample processors for unattended 24/7 operation.
- Space-optimized footprint: Integrated design reduces benchtop occupancy by >30% versus conventional multi-unit setups; LED status indicators (green = ready, amber = warning, red = error) provide at-a-glance system readiness verification.
Sample Compatibility & Compliance
The OMNIS platform supports aqueous and non-aqueous matrices across pharmaceutical, food & beverage, environmental, petrochemical, and academic applications—including USP , EP 2.2.20, and ISO 8587-compliant methods. Electrode compatibility includes glass pH, silver/silver chloride, platinum redox, and solid-contact ISEs. All hardware and firmware comply with IEC 61000-6-3 (EMC) and IEC 61010-1 (safety). Full GLP/GMP traceability is enabled through mandatory electronic signatures, version-controlled method archiving, and immutable audit trails for all critical events (e.g., reagent load, calibration, result export).
Software & Data Management
OMNIS Software v3.x provides role-based access control, automated report generation (PDF/CSV/XML), and native integration with LIMS via ASTM E1384 or HL7 protocols. Every titration generates a timestamped, digitally signed data package containing raw potential vs. volume curves, first-derivative plots, equivalence point calculations (inflection, Gran, or least-squares fitting), and uncertainty estimates per GUM (JCGM 100:2008). Data encryption (AES-256), secure remote access via HTTPS, and scheduled backup to network drives ensure continuity and compliance during regulatory inspections.
Applications
- Pharmaceutical QC: Assay of active ingredients (e.g., amine titration in APIs), chloride content in injectables (potentiometric argentometry), residual alkali in excipients.
- Food analysis: Total acidity (TA) in wines and juices, salt content (chloride) in dairy and meat products, peroxide value in oils.
- Environmental testing: Alkalinity and hardness in wastewater, cyanide in industrial effluents (pyridine-barbituric acid method), fluoride in drinking water (ISE).
- Chemical manufacturing: Acid number and saponification value in lubricants, free fatty acids in biodiesel, catalyst residue quantification.
FAQ
What standards does OMNIS support for regulatory compliance?
OMNIS meets ISO/IEC 17025, ASTM E2081, USP , EP 2.2.20, and FDA 21 CFR Part 11 requirements for electronic records and signatures.
Can OMNIS perform non-aqueous titrations?
Yes—compatible with solvents including glacial acetic acid, dimethylformamide (DMF), and ethylene glycol, using appropriate electrodes and solvent-specific calibration protocols.
Is method transfer possible from older Metrohm titrators?
Legacy tiamo™ methods can be imported and automatically converted into OMNIS-native workflows with validation prompts for parameter reconciliation.
How is reagent integrity verified during analysis?
RFID-tagged reagent bottles transmit lot number, concentration, expiry date, and storage conditions directly to the system; deviations trigger real-time alerts and prevent method execution.
What level of cybersecurity is implemented?
OMNIS features TLS 1.2+ encrypted communications, Windows Defender Application Control (WDAC) policy enforcement, and configurable password policies aligned with NIST SP 800-63B.
