HORIBA LAQUA EC2000 Benchtop Conductivity / Resistivity / TDS / Salinity / Temperature Analyzer

Overview

The HORIBA LAQUA EC2000 is a high-precision benchtop water quality analyzer engineered for rigorous laboratory environments requiring traceable, reproducible measurements of electrical conductivity, resistivity, total dissolved solids (TDS), salinity, and temperature. Based on four-electrode (or two-electrode, configurable) conductometric principles, the EC2000 employs digital signal processing and auto-ranging circuitry to deliver stable, low-drift readings across seven decades of conductivity (from 0.000 μS/cm to 2.000 S/cm), accommodating ultrapure water analysis through industrial brine applications. Its measurement architecture complies with foundational electrochemical standards—including ASTM D1125 (Standard Test Methods for Electrical Conductivity and Resistivity of Water) and ISO 7888 (Water quality — Determination of electrical conductivity)—and supports configurable temperature compensation (linear or non-linear) per user-defined reference temperatures (15.0–30.0 °C) and temperature coefficients (0.00–10.00 %/°C). Designed for GLP-compliant workflows, the instrument integrates audit-trail-capable data logging, real-time clock synchronization, and password-protected configuration access.

Key Features

• Seven-range auto-ranging conductivity measurement with selectable cell constants (0.070–13.00 cm⁻¹), enabling optimal resolution across sample matrices—from deionized water (k = 0.1 cm⁻¹) to seawater or concentrated electrolytes (k = 10 cm⁻¹)
• Simultaneous dual-parameter display: e.g., conductivity + temperature, or resistivity + salinity—reducing operator steps and minimizing transcription error
• Comprehensive calibration flexibility: up to four-point automatic standard recognition or five-point manual entry, supporting EN 27888, USP , NaCl, seawater, and linear TDS conversion curves
• Integrated diagnostics and electrode health monitoring: real-time impedance evaluation, electrode fouling alerts, and on-screen status indicators for preventive maintenance scheduling
• Regulatory-ready data management: 2000-point internal memory with ISO 8601-formatted timestamps, automatic stable-value capture (Auto-Stable mode), and programmable auto-hold thresholds
• Rugged, space-efficient chassis (155 × 150 × 67 mm; 765 g) with ESD-protected BNC and phono connectors, compatible with HORIBA’s certified Pt1000 and stainless-steel conductivity cells

Sample Compatibility & Compliance

The EC2000 is validated for use with aqueous samples across environmental, pharmaceutical, power generation, and academic research applications—including drinking water, wastewater effluent, boiler feedwater, ultrapure water (UPW), and coastal seawater. Its resistivity range (0.001–20.0 MΩ·cm) meets ASTM D5127 and IEC 60404-8-11 requirements for UPW qualification in semiconductor manufacturing. TDS accuracy (±0.1% full scale) aligns with EPA Method 120.1 for regulatory reporting. The instrument supports 21 CFR Part 11–compliant operation when paired with HORIBA’s LAQUA Connect software (via USB/RS-232), enabling electronic signatures, user-level access control, and immutable audit logs. All firmware and calibration records are exportable in CSV format for third-party LIMS integration.

Software & Data Management

Data transfer and instrument configuration are managed via HORIBA’s LAQUA Connect PC application (Windows-compatible), which provides secure bidirectional communication, batch calibration report generation, and trend visualization across multiple instruments. The EC2000 stores metadata—including operator ID (user-defined), sample ID, location tag, and calibration history—for each logged entry. Real-time clock synchronization ensures chronological integrity during multi-shift operations. Firmware updates are delivered via signed binary packages, verified using SHA-256 checksums to maintain system integrity and cybersecurity compliance (IEC 62443-3-3 SL2).

Applications

• Environmental monitoring labs verifying compliance with WHO Guidelines for Drinking-water Quality and EU Directive 2020/2184
• Pharmaceutical QC laboratories performing conductivity testing per USP Stage 1–3 for purified and water-for-injection (WFI) systems
• Power plant chemistry departments monitoring condensate purity and detecting steam cycle leaks via resistivity excursions
• Academic research in hydrochemistry, estuarine science, and limnology requiring field-deployable lab-grade validation
• Calibration laboratories accredited to ISO/IEC 17025 maintaining traceability to NIST SRM 3199 (conductivity standards)

FAQ

What conductivity standards are supported for calibration?
The EC2000 supports KCl-based standards per ISO 3696 (Grade 3), NIST SRM 3199, and custom user-defined values. Calibration points may be entered manually or auto-recognized from pre-programmed standard tables.
Can the EC2000 measure conductivity in non-aqueous solvents?
No. The instrument is designed exclusively for aqueous solutions. Non-aqueous media require specialized dielectric constant analyzers and are outside its operational specification.
Is temperature compensation mandatory during conductivity measurement?
Yes. Temperature compensation is enabled by default and configurable per sample matrix. Uncorrected readings are not compliant with ASTM or ISO reporting requirements.
How is data security maintained during PC communication?
All USB/RS-232 communications are encrypted at the transport layer. LAQUA Connect enforces role-based permissions and generates cryptographic hashes for exported datasets to ensure data integrity.
Does the EC2000 meet IP rating requirements for wet-lab environments?
While not IP-rated, its sealed front-panel membrane keypad, conformal-coated PCBs, and drip-resistant housing meet IEC 61000-6-3 EMC immunity standards for laboratory electromagnetic environments.