Zelab Dura Pro 12 Ultra-Pure Water System

Overview

The Zelab Dura Pro 12 Ultra-Pure Water System is a laboratory-grade, integrated purification platform engineered for consistent, on-demand production of Type I ultrapure water (UPW) per ASTM D1193-20, ISO 3696:1987, USP , EP 2.2.44, and CLSI EP28-A3c specifications. Designed for research laboratories, pharmaceutical QC environments, and analytical instrumentation feed applications—including HPLC, LC-MS, ICP-MS, cell culture, and molecular biology—the system employs a multi-stage purification architecture beginning with municipal tap water as the feed source. Core purification stages include dual-stage reverse osmosis (RO), activated carbon and KDF pre-filtration, mixed-bed nuclear-grade ion exchange resin, dual-wavelength (185 nm / 254 nm) UV oxidation, ultrafiltration (UF) with 5,000 Da MWCO, and dual-layer terminal sterilizing filtration (0.45 + 0.1 µm PES membranes). The system delivers UPW with resistivity ≥18.2 MΩ·cm at 25 °C, TOC <3 ppb, endotoxin <0.001 EU/mL, RNase/DNase <1 pg/mL / <5 pg/mL (optional configurations), and bacterial retention to <0.001 CFU/mL—meeting stringent requirements for sensitive life science and regulatory-compliant workflows.

Key Features

• 5.0-inch full-color touchscreen interface with animated menu navigation and real-time system diagnostics—including simultaneous monitoring of RO, DI, and UP water quality without manual sampling
• Dual-pump, dual-membrane RO architecture with intermediate storage tank, optimized for reduced wastewater ratio (<1:2), lower energy consumption, and enhanced long-term stability of permeate quality
• Integrated 50 L polyethylene reservoir with conical bottom, CO₂-absorbing air filter, and optional UV irradiation module (254 nm) to suppress microbial regrowth
• Remote mobile dispensing arm (up to 3 m cable reach; 0.9 m handheld range) featuring 2.0-inch graphical display showing real-time resistivity, temperature, flow rate, and dispensed volume; height-adjustable stand and ergonomic pipette-style handle
• Full-system sanitization protocol including programmable “loop disinfection”, “dispenser port disinfection”, “tank refill”, “manual drain”, and “disinfection stop” functions
• Automated RO membrane anti-scaling flush cycle with configurable interval and duration settings, plus manual forced-flush capability to extend membrane service life
• Comprehensive consumables management: lifetime tracking and replacement alerts for PP, KDF, AC, RO, DI, UP, UV, UF, and TF cartridges based on usage time or volume thresholds
• NSF-certified fluid path components (tubing, fittings, valves) minimizing organic leachables and ensuring low TOC contribution to final water
• GLP-compliant housing constructed from corrosion-resistant engineering plastics; fully password-protected configuration (dual-level access control)

Sample Compatibility & Compliance

The Dura Pro 12 is validated for continuous generation of water meeting or exceeding international standards for analytical reagent grade and critical biological applications. Its purification train is specifically configured to remove ions, organics, particles, microorganisms, endotoxins, nucleases, and volatile silica—making it suitable for high-sensitivity techniques such as electrophysiology, CRISPR-based editing, single-cell sequencing, and parenteral formulation support. All wetted materials comply with USP Class VI biocompatibility testing. The system supports audit-ready documentation via built-in data logging: one year of operational history—including water quality logs, consumables status, alarm events, and user actions—is stored internally and exportable via USB in CSV format. Data integrity conforms to FDA 21 CFR Part 11 requirements when paired with appropriate access controls and electronic signature protocols. Optional configurations (e.g., Dura Pro 12FV) integrate additional UF and terminal filtration for endotoxin- and nuclease-free applications under GMP/GLP environments.

Software & Data Management

The embedded control firmware provides secure, timestamped logging of all critical parameters: resistivity (µS/cm and MΩ·cm), TOC (ppb), temperature (°C), flow rate (mL/min), total dispensed volume (L), and cumulative runtime for each consumable stage. Alarm conditions—including low feed pressure, reservoir overflow, conductivity excursions beyond setpoints for RO/DI/UP streams, and cartridge exhaustion—are recorded with timestamps and severity classification. Historical data can be queried by date range, parameter type, or event category. USB export enables integration into LIMS or ELN platforms. No cloud connectivity or external telemetry is enabled by default—ensuring full data sovereignty and alignment with institutional IT security policies.

Applications

• HPLC, UHPLC, and LC-MS mobile phase and blank preparation
• ICP-MS and GF-AAS diluent and standard solution preparation
• Mammalian and stem cell culture media formulation
• In vitro fertilization (IVF) and embryo transfer support fluids
• PCR, qRT-PCR, NGS library prep, and CRISPR-Cas9 reaction buffers
• Electrophysiology recording solutions and patch-clamp perfusates
• Calibration standards for clinical chemistry analyzers
• Pharmaceutical stability testing and dissolution media

FAQ

What feed water quality is required for optimal operation?

Municipal potable water meeting local drinking water standards is required, with inlet temperature between 5–45 °C and pressure of 1.0–4.0 kgf/cm² (0.1–0.4 MPa). Pre-treatment is recommended if feed water exceeds 500 ppm TDS or contains elevated chlorine, iron, or hardness.

Can the system be integrated with existing lab water distribution networks?

Yes—the Dura Pro 12 supports optional loop circulation kits and pressure-regulated distribution manifolds compatible with stainless-steel or fluoropolymer piping systems. Integration requires professional assessment of backpressure and microbial control strategy.

How often must consumables be replaced?

Replacement intervals depend on feed water quality and daily usage volume. Typical service life: RO membranes (2–3 years), DI/UP cartridges (6–12 months), UF modules (12–24 months), UV lamps (12 months). The system calculates remaining life based on actual throughput and alerts users proactively.

Is validation documentation available for IQ/OQ/PQ protocols?

Zelab provides a comprehensive Validation Support Package including DQ templates, FAT/SAT checklists, calibration certificates for onboard sensors, and traceable test reports for TOC, resistivity, endotoxin, and microbiological performance—aligned with ISO/IEC 17025 and ASTM E2500 guidance.

Does the system meet GLP and GMP requirements for regulated laboratories?

Yes—when deployed with configured audit trails, user access controls, electronic signatures (via external authentication), and periodic performance verification, the Dura Pro 12 satisfies core elements of GLP (OECD 1998), GMP (ICH Q5C, USP ), and Annex 1 (EU) for water system qualification.