DLAB DPCD100T Benchtop Electrochemical Analyzer – Keypad-Operated Multi-Parameter System

Overview

The DLAB DPCD100T is a benchtop electrochemical analyzer engineered for routine and quality-controlled laboratory environments requiring simultaneous, high-fidelity measurement of pH, electrical conductivity (COND), and dissolved oxygen (DO). Designed around a tri-sensor electrochemical architecture, the system employs standardized potentiometric (pH), conductimetric (COND), and amperometric (DO) transduction principles—each compliant with core ISO 7888 (conductivity), ISO 5814 (DO), and ISO 3696 (buffer standards) metrological frameworks. Its modular sensor interface supports interchangeable, industry-standard electrodes—including glass combination pH electrodes, platinum or graphite conductivity cells, and Clark-type or optical DO probes—ensuring traceable performance across diverse aqueous matrices. The 7-inch HD TFT display delivers real-time, side-by-side parameter visualization without mode switching, eliminating operator-induced measurement latency and supporting GLP-aligned workflow continuity.

Key Features

• Simultaneous triple-parameter acquisition (pH, COND, DO) with independent signal conditioning circuits to prevent cross-talk interference
• 5-point pH calibration with slope and offset validation; automatic recognition of NIST-traceable buffer sets (e.g., pH 4.01, 6.86, 7.00, 9.18, 10.01)
• Integrated ATC using Pt1000 thermistor input (±0.1 °C accuracy) for real-time compensation across 0–100 °C range
• Onboard electrode health diagnostics: detects open-circuit, short-circuit, asymmetry, and response time degradation per IUPAC-recommended diagnostic protocols
• IP54-rated enclosure—dust-protected and resistant to water splashes from any direction—enabling stable operation in QC labs with ambient humidity fluctuations
• Dual-language UI (English/Chinese) with context-sensitive help and intuitive keypad navigation—optimized for glove-compatible operation and reduced training overhead

Sample Compatibility & Compliance

The DPCD100T is validated for use with aqueous samples ranging from ultrapure water (18.2 MΩ·cm) to high-ionic-strength brines (<200 mS/cm) and aerated or deoxygenated solutions (0–20 mg/L DO). It complies with ISO/IEC 17025:2017 requirements for measurement uncertainty estimation, and its data integrity features align with FDA 21 CFR Part 11 expectations for electronic records—including user-defined audit trails, password-protected configuration access, and immutable timestamped storage. All calibration and measurement logs are exportable in CSV format for integration into LIMS or ELN platforms. CE marking confirms conformity with EU Electromagnetic Compatibility (2014/30/EU) and Low Voltage (2014/35/EU) directives.

Software & Data Management

Data handling follows ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available). Each of the 1500 stored records contains sample ID, measured value, unit, calibrated temperature, electrode ID (if tagged), and full UTC timestamp. Export options include direct Bluetooth printing (via certified thermal printers), USB mass-storage transfer to PC/U-disk, and optional RS232 serial output for legacy SCADA systems. No proprietary software is required: exported CSV files are natively readable in Excel, Python (pandas), or MATLAB. Firmware updates are delivered via signed .bin files through USB—validated with SHA-256 checksums to ensure integrity.

Applications

• Pharmaceutical water system monitoring (PW, WFI, Purified Water) per USP and EP 2.2.38
• Environmental lab analysis of surface water, wastewater effluents, and groundwater per EPA Method 150.1 (conductivity) and 360.1 (DO)
• Food & beverage QC—pH stability testing of dairy, brewing wort, and juice concentrates
• Academic electrochemistry teaching labs: polarization curve setup, buffer capacity studies, and sensor response kinetics
• Industrial boiler feedwater and cooling tower management under ASTM D1125 and D5119

FAQ

Does the DPCD100T support GLP-compliant audit trails?
Yes—user login sessions, calibration events, parameter changes, and data exports are logged with timestamps, operator IDs, and action descriptions. Logs cannot be edited or deleted.
Can third-party electrodes be used?
Yes—any BNC (pH), DIN (COND), or 6-pin (DO) electrode meeting standard pinout and voltage/output specifications is compatible. DLAB provides compatibility documentation for major OEMs (e.g., Mettler Toledo, Hanna, Thermo Orion).
Is temperature compensation mandatory for conductivity measurements?
Yes—linear or non-linear (NaCl or KCl reference curve) compensation is enforced by default per ISO 7888 to ensure traceability to 25 °C reference values.
How is data security ensured during Bluetooth transmission?
Bluetooth 4.2 BLE pairing requires manual device authorization; no data is broadcast. All print commands transmit only formatted ASCII—no raw sensor metadata or credentials.
What maintenance is required for long-term accuracy?
Annual verification against NIST-traceable standards is recommended. Electrode cleaning, storage solution replenishment, and membrane replacement (for DO probes) follow manufacturer guidelines—not instrument firmware-driven schedules.