HORIBA LAQUA200 Series Portable Water Quality Analyzer

Overview

The HORIBA LAQUA200 Series is a field-deployable, multi-parameter handheld water quality analyzer engineered for reliable, on-site measurement of critical aquatic parameters—including pH, electrical conductivity (EC), and dissolved oxygen (DO). Designed using fundamental electrochemical and potentiometric principles, the LAQUA200 platform integrates solid-state pH sensing, four-electrode conductivity measurement, and galvanic-type DO detection to ensure high reproducibility under variable environmental conditions. Its compact, ergonomic form factor supports rapid deployment in rivers, lakes, wastewater treatment plants, aquaculture facilities, and drinking water distribution networks. The instrument operates without external power sources—relying solely on standard AAA batteries—and meets international requirements for portable environmental instrumentation used in regulatory monitoring and routine QA/QC workflows.

Key Features

• Ruggedized IP67-rated housing constructed from impact-resistant polycarbonate and soft-touch thermoplastic elastomer (TPE), providing slip resistance, abrasion resilience, and full recyclability.
• Large 50 × 50 mm monochrome LCD with white LED backlight, optimized for legibility in low-light or outdoor conditions—including shaded stream banks or underground utility vaults.
• Modular sensor architecture: interchangeable probe modules (pH210/pH220, EC210/EC220, DO210/DO220) enable application-specific configuration without hardware replacement.
• Intelligent auto-buffer recognition during pH calibration reduces operator error and ensures traceable, repeatable calibration across standard buffers (pH 4.01, 7.00, 10.01).
• Built-in temperature compensation algorithms (ATC) compliant with ISO 7888 (conductivity) and ISO 5814 (DO), supporting accurate measurements across 0–50 °C ambient range.
• USB-C port enables direct data transfer to Windows-based PCs; compatible with HORIBA’s LAQUA Smart software for report generation, trend analysis, and audit-ready export (CSV, PDF).

Sample Compatibility & Compliance

The LAQUA200 Series is validated for use with natural waters (freshwater, estuarine, and treated effluent), process water, and aquarium systems. It complies with key international standards governing field water analysis, including ASTM D1293 (pH of water), ASTM D5391 (conductivity of pure water), and ISO 5815-1 (DO determination by electrochemical probe). While not certified for GLP or GMP-regulated environments out-of-the-box, its calibration logs, timestamped measurement records, and firmware version tracking support alignment with ISO/IEC 17025 documentation requirements when integrated into accredited laboratory quality systems. The device does not require hazardous materials handling or special disposal protocols—consistent with WEEE and RoHS directives.

Software & Data Management

LAQUA Smart software (v3.2+) provides secure, local data management without cloud dependency. Users can perform batch calibration verification, generate customizable reports with embedded metadata (operator ID, location tag, calibration history), and export datasets compliant with EPA Method 160.1 reporting templates. Audit trail functionality includes immutable timestamps for all calibrations and measurements, satisfying basic requirements for FDA 21 CFR Part 11–aligned recordkeeping when deployed in non-clinical environmental applications. Firmware updates are delivered via signed binary packages through HORIBA’s authorized service portal, ensuring integrity and backward compatibility.

Applications

• Field-based compliance monitoring for municipal wastewater discharge permits (e.g., NPDES)
• Real-time assessment of surface water health in watershed management programs
• Process control in decentralized water treatment units and membrane filtration systems
• Baseline characterization during environmental site assessments (ESAs) and Phase I/II investigations
• Educational use in university environmental science labs requiring portable, low-maintenance instrumentation
• Preventive maintenance checks for cooling towers and industrial boiler feedwater systems

FAQ

Does the LAQUA200 Series support automatic temperature compensation (ATC)?

Yes—each sensor module incorporates a built-in NTC thermistor for real-time ATC, applied per ISO-standard algorithms specific to pH, EC, and DO measurement principles.
Can calibration data be exported for regulatory submission?

Yes—calibration events are stored with date/time stamps, buffer IDs, slope/mV readings, and electrode status; exportable via LAQUA Smart as CSV or PDF with digital signature capability.
Is the device suitable for seawater measurements?

The EC220 and DO220 modules are rated for salinity up to 50 ppt; however, pH220 requires specialized high-ionic-strength calibration and is recommended only for short-term spot checks in marine environments.
What is the warranty coverage for LAQUA200 instruments?

HORIBA provides a 24-month limited warranty covering defects in materials and workmanship; sensor probes carry a separate 6-month warranty due to consumable nature.
Are replacement electrodes and membranes available separately?

Yes—HORIBA offers OEM-certified replacement pH glass electrodes (LAQUA-pH-REF), DO membranes (DO-MEM-200), and EC cell cleaning kits (EC-CLEAN-200) through authorized distributors.