Leici DZS-708L Multi-Parameter Analyzer (EC-T Conductivity & Temperature Module Kit)

Overview

The Leici DZS-708L Multi-Parameter Analyzer (EC-T Conductivity & Temperature Module Kit) is a modular, benchtop electrochemical platform engineered for high-reproducibility measurement of conductivity, resistivity, total dissolved solids (TDS), salinity, and temperature in aqueous solutions. It operates on the principle of two-electrode (two-ring) conductometric sensing—ideal for routine quality control, environmental monitoring, and process validation where robustness, traceability, and regulatory alignment are required. The instrument integrates a precision temperature-compensated EC-T measurement module with an embedded microprocessor-controlled analog front-end, enabling automatic range switching, real-time linear/non-linear temperature compensation (including pure-water mode), and multi-point calibration across the full dynamic range. Designed for laboratory use under ISO/IEC 17025-aligned workflows, the DZS-708L meets foundational requirements for analytical validity in regulated environments—including pharmaceutical water testing, wastewater characterization, and food/beverage formulation.

Key Features

• 7-inch high-resolution color TFT touchscreen with intuitive icon-driven interface supporting English and Chinese language modes
• Four independent measurement channels with plug-and-play recognition of up to six interchangeable modules (pH, pX, EC-T, EC-F, DO-F, DO-P)
• IP54-rated enclosure for dust resistance and limited water ingress protection during routine lab handling
• Auto-diagnostic startup sequence, power-loss recovery, factory reset, and firmware-upgradable architecture for long-term functional adaptability
• Three-tier user permission system (administrator/operator/visitor) with password enforcement and role-based access control
• Smart endpoint detection with multiple reading modes: auto-hold, timed interval, scheduled batch acquisition, and manual trigger
• Calibration management including 1–5 point conductivity standardization, built-in GB and international standard solution libraries, and mandatory calibration alerts

Sample Compatibility & Compliance

The DZS-708L EC-T module is validated for aqueous samples ranging from ultrapure water (≥5.00 Ω·cm) to highly conductive brines (up to 3000 mS/cm). Its dual-range electrode design eliminates manual range selection errors and ensures optimal signal-to-noise ratio across orders of magnitude. Temperature compensation algorithms conform to ASTM D1125 and ISO 7888 standards for conductivity reporting. Instrument compliance includes adherence to GLP documentation requirements: all measurements are timestamped, user-attributed, and stored with full metadata (electrode ID, calibration history, ambient conditions). When paired with Leici’s certified communication software and external audit log servers, the system supports 21 CFR Part 11-compliant electronic records—including electronic signatures, audit trails, and immutable data archiving—meeting GMP expectations for QC laboratories in FDA-regulated sectors.

Software & Data Management

• Onboard storage for ≥1000 complete measurement records per parameter (conductivity, resistivity, TDS, salinity, ash content), plus 100 calibration sets and 1000 standard verification logs
• Export capabilities via USB to CSV (tabular), PDF (formatted report), or proprietary binary formats; import of pre-configured methods from USB drive
• RS-232 port compatible with industry-standard serial printers; configurable print templates for SOP-aligned hardcopy output
• PC connectivity via USB virtual COM port using Leici’s dedicated LabLink software for bidirectional data synchronization, statistical analysis (mean, SD, RSD, trend charts), and method deployment
• Barcode scanner integration for sample ID auto-population, reducing transcription errors in high-throughput workflows
• GMP operation log archives all critical events: login/logout, calibration initiation, method changes, data deletion, and firmware updates

Applications

The DZS-708L EC-T kit serves as a primary tool in applications demanding traceable, repeatable conductivity-based analysis: validation of purified water systems (PW, WFI) per USP ; monitoring of boiler feedwater and cooling tower cycles; assessment of soil leachate and surface water salinity; determination of TDS in bottled water and beverage concentrates; and verification of electrolyte concentration in battery manufacturing and electroplating baths. Its temperature-stable electronics and wide dynamic range also support research-grade studies in colloid science, polymer dissolution kinetics, and ionic liquid characterization—where precise thermal correlation between conductivity and viscosity is essential.

FAQ

Does the DZS-708L support automatic temperature compensation for conductivity measurements?

Yes—it implements selectable compensation models: linear (0.0–3.0 %/°C), non-linear (based on reference tables), pure-water mode (for low-conductivity ultrapure water), and no compensation.
Can the instrument store calibration data separately for different electrodes or probe types?

Yes—each EC-T module stores its own calibration history, including date/time, operator ID, standard used, slope, offset, and deviation metrics.
Is the data export format compatible with LIMS or ELN systems?

CSV exports are LIMS-ready; PDF reports include QR-coded metadata for rapid digital ingestion; API-level integration requires Leici LabLink Enterprise edition.
What is the maximum operating temperature for continuous measurement?

The EC-T sensor is rated for sustained operation up to 135.0 °C; prolonged exposure above 80 °C requires use of high-temperature electrode variants (sold separately).
Does the system meet ISO/IEC 17025 requirements for accredited testing labs?

As supplied, it fulfills metrological traceability and record-keeping prerequisites; full accreditation requires documented uncertainty budgets, interlaboratory verification, and procedural validation per ISO/IEC 17025:2017 Clause 7.7.