Thermo Fisher Aquakem 600 Automated Water Quality Analyzer

Overview

The Thermo Fisher Aquakem 600 is a high-throughput, discrete photometric analyzer engineered for precise, reliable, and scalable water quality analysis in environmental, regulatory, and municipal laboratories. Unlike continuous-flow or segmented-flow analyzers, the Aquakem 600 employs a true discrete analysis architecture—originally adapted from clinical diagnostics and rigorously optimized for complex aqueous matrices. Each sample is processed individually in a dedicated reaction cuvette, eliminating cross-contamination risks and enabling independent method execution per parameter. This architecture supports simultaneous multi-parameter testing across heterogeneous sample types—including raw surface water, wastewater effluents, drinking water, and industrial process streams—without method interference or carryover. The system operates on standardized colorimetric, enzymatic, and reduction-based chemistries compliant with EPA, ISO, and ASTM methods (e.g., ISO 6775, ASTM D129, EPA Method 353.2 for nitrate). Its modular design integrates seamlessly into GLP- and ISO/IEC 17025-accredited workflows, supporting full traceability and audit-ready data integrity.

Key Features

• Throughput of up to 600 determinations per hour across configurable assay panels
• Dedicated sample and reagent carousels: 84-position ambient sample rack and 45-position refrigerated reagent carousel (4–10 °C)
• Independent dual dispensing system: separate pipetting probes for samples and reagents, minimizing contamination and enabling parallel aspiration
• Photometric detection across 340–880 nm with solid-state spectrophotometer and temperature-controlled cuvette chamber
• Onboard barcode reader for unambiguous sample identification and LIMS integration
• Automated primary and secondary dilution capabilities with programmable dilution factors (1:2 to 1:1000), supporting wide dynamic range without manual intervention
• Open-system architecture: users define custom protocols, reagent formulations, calibration curves, and QC rules via intuitive software interface
• Optional cadmium reduction module for selective, high-sensitivity nitrate quantification (reduction to nitrite followed by diazotization); cadmium column regenerated in situ for >1,000 analyses

Sample Compatibility & Compliance

The Aquakem 600 accommodates turbid, colored, high-solids, and low-conductivity water matrices without pre-filtration in most applications. It meets performance criteria outlined in ISO 5667-3 (water sampling), ISO 15586 (trace metal analysis), and EPA Guidance for Validating Water Analysis Methods. All photometric assays are traceable to NIST-certified reference materials. The system supports 21 CFR Part 11-compliant electronic signatures, audit trails, and secure user role management. Reagent preparation logs, calibration history, and instrument maintenance records are automatically timestamped and archived. Routine operation complies with ISO/IEC 17025:2017 clause 7.2.2 (method validation) and 7.7 (result reporting), facilitating accreditation audits.

Software & Data Management

Controlled by Thermo Fisher’s Aquakem Software Suite (v5.x), the platform provides method development tools, real-time QC charting (Levey-Jennings, Westgard rules), automated outlier detection, and customizable report templates (PDF, CSV, XML). Raw absorbance data, kinetic reaction profiles, and calibration curve metadata are stored in a relational database with SQL export capability. Integration with major LIMS platforms (e.g., LabWare, STARLIMS, Thermo Fisher SampleManager) is achieved via ASTM E1384 and HL7 messaging standards. Audit trail functionality records all user actions—including method edits, result overrides, and calibration adjustments—with immutable timestamps and operator IDs.

Applications

• Nutrient analysis: Ammonia-N, nitrate-N, nitrite-N, orthophosphate, total phosphorus (acid hydrolysis), silica
• Organic load indicators: Chemical oxygen demand (COD), total organic carbon (TOC) via persulfate oxidation
• Disinfection byproducts: Free and total chlorine, chloramines, bromide
• Metal speciation: Iron (ferrous/ferric), manganese, aluminum (after digestion)
• Regulatory compliance testing for EU WFD, US Clean Water Act, and China’s GB 3838–2002 standards

FAQ

Is the Aquakem 600 compliant with 21 CFR Part 11 for regulated environments?

Yes—the system includes electronic signature enforcement, audit trail logging, and role-based access control configured to meet FDA requirements for electronic records.
Can I develop and validate my own analytical methods on this platform?

Yes—the open architecture permits full customization of reagent sequences, reaction timing, wavelength selection, and calibration models; method validation reports can be exported per ISO/IEC 17025 Annex A.
What is the expected lifetime of the cadmium reduction column?

Under standard operating conditions (pH 7.5–8.5, flow rate ≤1.2 mL/min), the column maintains >95% reduction efficiency for ≥1,200 nitrate analyses before regeneration is required.
Does the system support remote monitoring and diagnostics?

Yes—via Thermo Fisher’s ConnectIQ cloud service, enabling real-time status alerts, predictive maintenance notifications, and secure remote troubleshooting by certified field engineers.
How does the Aquakem 600 handle particulate-laden wastewater samples?

Integrated centrifugation-compatible sample tubes and optional auto-filtration modules (0.45 µm PES membrane) minimize clogging; the discrete cuvette format prevents line fouling common in flow-based systems.