Hanna HI2003 Ultra-Thin Benchtop/Portable EC-TDS-Salinity-Temperature Meter

Overview

The Hanna HI2003 is an ultra-thin, multifunctional benchtop/portable meter engineered for high-precision measurement of electrical conductivity (EC), total dissolved solids (TDS), salinity (expressed as % NaCl, Practical Salinity Units [PSU], and g/L), and temperature across laboratory, field, and industrial quality control environments. It employs four-electrode (tetrapolar) conductometric measurement—a technique that eliminates polarization errors and contact resistance effects inherent in two-electrode systems—enabling stable, reproducible readings over wide conductivity ranges (0.00 µS/cm to 500.0 mS/cm). The instrument operates on the principle that solution conductivity is directly proportional to ion concentration and mobility, with temperature compensation applied via a built-in Pt1000 sensor and configurable β-coefficient (0.00–6.00%/°C, default 1.90%/°C). Designed for traceability and regulatory compliance, the HI2003 implements GLP (Good Laboratory Practice) data logging with full audit trail metadata—including calibration history, operator ID (user-definable), measurement timestamp, temperature compensation status, and electrode identification—supporting ISO/IEC 17025 and FDA 21 CFR Part 11 readiness when paired with validated data management workflows.

Key Features

• 5.5-inch high-contrast LCD touchscreen display with 150° viewing angle, enabling clear readability at distances up to 5 meters—ideal for shared lab workspaces and production line monitoring.
• Modular deployment modes: benchtop (with adjustable rotating electrode stand), wall-mounted (via optional bracket), and handheld portable operation—optimized for flexibility without compromising ergonomics or stability.
• HI763100 smart four-ring platinum conductivity electrode with integrated Pt1000 temperature sensor and embedded EEPROM chip storing calibration coefficients, serial number, and electrode history—enabling plug-and-play recognition and automatic parameter loading upon insertion.
• 3.5 mm proprietary keyed connector ensures rapid, alignment-free electrode attachment—eliminating bent pins and interface misalignment risks common with standard BNC or mini-DIN connectors.
• Dual USB interface architecture: USB-A port supports direct data export to FAT32-formatted USB flash drives; micro-USB port enables simultaneous charging and bidirectional data transfer to Windows/macOS PCs using Hanna’s HI92000 software.
• Rechargeable lithium-ion battery (typical 12-hour runtime) with intelligent charge management—compatible with HI75110/220E multi-functional cradle for continuous operation during extended measurement sessions.
• Robust probe construction: platinum sensing rings housed in chemically inert PVDF body with PEI (polyetherimide) protective sheath—resistant to aggressive solvents, acids, and alkalis per ASTM D5204 and ISO 10993-5 biocompatibility screening guidelines.

Sample Compatibility & Compliance

The HI2003 accommodates aqueous samples ranging from ultrapure water (e.g., pharmaceutical WFI, semiconductor rinse water) to hypersaline brines (up to 500 mS/cm), seawater (PSU 2–42), and concentrated NaCl solutions (0–400% w/w). Its tetrapolar geometry prevents electrode fouling and minimizes drift in viscous or particulate-laden matrices. For regulated applications, the instrument supports documented calibration verification using NIST-traceable standards (e.g., HI7031L, HI7037L), and stores full GLP records—including calibration date, standard used, deviation, and technician ID—to satisfy internal QA protocols and external audits under ISO 9001, ISO 17025, USP , and EPA Method 120.1. While not intrinsically rated for hazardous locations, its low-voltage design and sealed front panel meet IEC 61010-1 safety requirements for laboratory instrumentation.

Software & Data Management

Data generated by the HI2003 is structured in CSV format and includes measurement value, unit, temperature, EC/TDS conversion factor, salinity mode, GLP metadata, and real-time clock stamp. Hanna’s HI92000 Windows software enables batch export, statistical analysis (mean, SD, CV%), trend charting, and report generation compliant with 21 CFR Part 11 Annex 11 requirements when configured with electronic signatures and audit trail activation. All stored entries are immutable post-acquisition; editing requires explicit user authentication and generates a new audit record. Firmware updates are delivered via USB drive or micro-USB connection, ensuring long-term supportability and alignment with evolving metrological standards.

Applications

• Environmental monitoring: EC/TDS profiling of freshwater streams, wastewater effluents, and estuarine mixing zones per APHA Standard Methods 2510B.
• Food & beverage QC: Salt content verification in brined cheeses, soy sauce, pickled vegetables, and brewing water per AOAC 971.25 and ISO 21872-1.
• Aquaculture & marine biology: Real-time PSU tracking in recirculating aquaculture systems (RAS) and coral propagation tanks aligned with NOAA NMFS guidelines.
• Pharmaceutical manufacturing: Conductivity verification of purified water (PW) and water for injection (WFI) per USP and EP 2.2.38.
• Industrial process control: Monitoring boiler feedwater purity, electroplating bath concentration, and desalination plant permeate quality.

FAQ

What calibration standards are supported for EC measurement?
The HI2003 recognizes eight built-in conductivity standards: 84 µS/cm, 1413 µS/cm, 5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm, and 118.8 mS/cm—covering all major ISO and ASTM reference points.
Can the instrument measure true TDS independently of EC?
No. TDS values are calculated from EC using a selectable linear conversion factor (0.45–0.80, default 0.50), consistent with gravimetric correlation models defined in ASTM D5391 and ISO 7888.
Is temperature compensation mandatory for EC readings?
Temperature compensation can be disabled to report absolute (non-compensated) EC values—a requirement for certain method validations including ASTM D1125 Annex A1.
How is electrode diagnostics performed?
The HI763100 probe continuously monitors cell constant stability and reports diagnostic flags for coating, air bubbles, or open-circuit conditions via on-screen alerts and logged error codes.
Does the HI2003 comply with GLP data integrity requirements?
Yes—each stored reading includes immutable timestamp, operator ID, calibration verification status, temperature, and measurement mode, fulfilling core ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).