Eutech PC700 pH/Conductivity Multiparameter Benchtop Meter

Overview

The Eutech PC700 is a high-precision, benchtop multiparameter meter engineered for routine and regulatory water quality analysis in environmental, academic, and industrial laboratories. It operates on potentiometric (pH, ORP) and conductometric (conductivity, TDS, resistivity) measurement principles—fully compliant with standard electrochemical methodologies defined in ASTM D1125, ISO 7888, and USP . The instrument integrates temperature-compensated measurements across five core parameters—pH, oxidation-reduction potential (ORP), conductivity, total dissolved solids (TDS), and temperature—with automatic temperature compensation (ATC) via integrated or external Pt1000 sensors. Its dual-line LCD display (5.6 × 7.5 cm) simultaneously presents real-time measurement values, electrode status, calibration history, date/time stamp, and active calibration points—enabling full traceability without external logging.

Key Features

• Five-parameter capability: Simultaneous measurement of pH (–2.00 to 16.00), ORP (±2000 mV), conductivity (0 μS/cm to 200.0 mS/cm), TDS (0–200 ppt), and temperature (0.0–100.0 °C)
• High-resolution measurement: 0.01 pH resolution; 0.1 mV (±199.9 mV range) / 1 mV (full scale) ORP resolution; selectable conductivity resolution down to 0.01 μS/cm
• Multi-point calibration: Up to 5-point pH calibration with auto-buffer recognition; customizable conductivity cell constant selection across five fixed values (0.1, 1.0, 10.0 cm⁻¹, etc.)
• GLP-ready functionality: Built-in audit trail support—including timestamped calibration records, electrode ID tracking, and user-defined ID fields—aligned with FDA 21 CFR Part 11 data integrity expectations for regulated environments
• Rugged benchtop architecture: Compact footprint (17.5 × 15.5 × 6.9 cm), 650 g weight, and IP20-rated enclosure suitable for controlled lab environments; powered by universal-input SMPS (100–240 VAC)
• Expandable connectivity: Standard BNC (pH/ORP), 8-pin DIN (conductivity/TDS), and DC input interfaces accommodate interchangeable electrodes from Eutech’s certified portfolio—including refillable pH electrodes, platinum ORP probes, and graphite or stainless-steel conductivity cells

Sample Compatibility & Compliance

The PC700 is validated for use with aqueous samples ranging from ultrapure water (e.g., pharmaceutical rinse water per USP ) to wastewater effluents and brackish surface waters. Its conductivity measurement engine supports configurable TDS conversion factors (0.5–1.0), enabling accurate reporting per ISO 10523 (pH in natural waters) and APHA Standard Methods 2510B (conductivity). All calibrations adhere to NIST-traceable standards, and the instrument meets IEC 61010-1 safety requirements for laboratory electrical equipment. While not intrinsically rated for field deployment, its design conforms to ISO/IEC 17025 documentation practices when used within accredited testing laboratories.

Software & Data Management

Data storage is managed internally with non-volatile memory supporting up to 100 measurement records—including parameter values, temperature, date/time, electrode serial number (if encoded), and calibration metadata. Export is manual via visual readout only; no USB, Bluetooth, or PC interface is embedded. For labs requiring electronic data capture, the PC700 is compatible with Eutech’s optional LogEasy software (sold separately), which enables CSV export, trend visualization, and report generation aligned with GLP documentation workflows. All stored entries include mandatory time/date stamps and support user-defined operator IDs—facilitating internal QA audits and method validation protocols.

Applications

• Environmental monitoring: Surface water, groundwater, and wastewater characterization per EPA Method 120.1 (pH) and 120.2 (conductivity)
• Pharmaceutical water systems: Monitoring of Purified Water (PW) and Water for Injection (WFI) per USP , including conductivity pass/fail evaluation at specified temperatures
• Academic teaching labs: Student experiments involving buffer calibration, ion strength effects on pH, and salinity-conductivity correlations
• Food & beverage QC: Rinse water verification, process stream monitoring, and cleaning-in-place (CIP) solution validation
• Industrial pretreatment: Influent/effluent screening in municipal and industrial wastewater treatment plants

FAQ

Does the PC700 support automatic electrode detection?
No—it requires manual selection of electrode type (pH, ORP, or conductivity) and cell constant prior to measurement.
Can the instrument store calibration curves for multiple electrodes?
Yes—each calibration session is saved with timestamp and electrode identifier; up to 100 total records are retained in memory.
Is the PC700 compliant with 21 CFR Part 11?
It provides foundational GLP features (audit trail, timestamps, user fields), but lacks electronic signature capability and system access controls required for full Part 11 compliance.
What temperature sensor options are supported?
Integrated thermistor (fixed) or external Pt1000 probe via 8-pin DIN port; manual temperature entry is also available.
Are replacement electrodes supplied with NIST-traceable calibration certificates?
Certified electrodes are available as optional accessories; standard electrodes ship with manufacturer’s performance specifications only.