Chu Ding Technology UP-N Series Standard Ultra-Pure Water System

Overview

The Chu Ding Technology UP-N Series Standard Ultra-Pure Water System is a laboratory-grade water purification platform engineered to convert pre-purified feed water—such as reverse osmosis (RO) permeate, distilled water, deionized water, or commercially supplied purified water—into Type I ultrapure water compliant with stringent international analytical and life science requirements. Operating on a multi-stage purification architecture—including dual-wavelength UV photooxidation (185 nm + 254 nm), mixed-bed ion exchange, and 0.22 µm final filtration—the system delivers consistent water quality with resistivity ≥18.2 MΩ·cm at 25 °C, total organic carbon (TOC) <10 ppb, microbial count <1 CFU/mL, endotoxin <0.001 EU/mL, and particulate count 0.22 µm). Designed for integration into centralized lab water infrastructures or standalone benchtop deployment, the UP-N series meets or exceeds the Chinese National Standard GB/T 11446.1-2013 for Electronic Grade Water (Grade I) and serves as a technically validated alternative to established global platforms in routine analytical applications.

Key Features

• Real-time online monitoring of resistivity and TOC, with configurable alarm thresholds via intuitive LCD interface
• Dual-wavelength UV oxidation module (185 nm for organic photolysis; 254 nm for microbial inactivation) ensures continuous TOC suppression and microbiological control
• Automated recirculation loop maintains ultra-stable water quality between draws, minimizing stagnation-related degradation
• Intelligent source water quality detection: triggers audible/visual alerts when feed water conductivity exceeds preset limits, preventing premature consumable exhaustion
• Modular cartridge design enables rapid, tool-free replacement of ion exchange resins, UF membranes, and final filters—reducing downtime and service complexity
• Microprocessor-based control system supports fully automated operation: auto-start, auto-shutdown, scheduled UV sterilization cycles, and fault diagnostics with event logging
• Self-diagnostic alerts for low-quality product water, expired consumables, and abnormal pressure differentials across purification stages

Sample Compatibility & Compliance

The UP-N Series is compatible with feed water meeting ASTM D1193-06 Type III specifications (conductivity ≤5 µS/cm) or equivalent RO output. Final water output complies with ISO 3696:1987 (Grade 1), CLSI EP23-A (for clinical laboratory reagent water), and USP Purified Water and Water for Injection (WFI) guidance where applicable. While not certified to FDA 21 CFR Part 11 out-of-the-box, the system’s audit-trail-capable event log and parameter-lock functionality support GLP/GMP-aligned validation protocols when integrated with qualified laboratory information management systems (LIMS). All wetted materials—including housing, tubing, and cartridges—are USP Class VI-certified and leachables-tested per ISO 10993-12.

Software & Data Management

The embedded microcontroller records operational events—including runtime hours, alarm history, consumable usage metrics, and daily resistivity/TOC snapshots—in non-volatile memory. Data export is supported via USB port (CSV format) for traceability and periodic QA review. Optional Ethernet or RS-485 interfaces enable remote status monitoring and integration into facility-wide water management dashboards. Firmware updates are performed locally via USB drive, ensuring version control and regulatory documentation integrity. No cloud connectivity or proprietary software installation is required—aligning with institutional cybersecurity policies governing instrument network access.

Applications

This system is validated for critical applications demanding high-purity water, including but not limited to: mobile phase preparation and column equilibration in high-performance liquid chromatography (HPLC) and ultra-high-performance liquid chromatography (UHPLC); sample dilution and standard preparation for inductively coupled plasma mass spectrometry (ICP-MS) and graphite furnace atomic absorption spectroscopy (GFAAS); reagent formulation in molecular biology workflows (e.g., PCR, sequencing, cell culture media); calibration and blank preparation for ion chromatography (IC) and capillary electrophoresis (CE); and solvent blanks in gas chromatography–mass spectrometry (GC-MS) analysis. Its low endotoxin and particle content also support sensitive assays in immunology and stem cell research.

FAQ

What feed water quality is required for optimal UP-N Series performance?

Feed water must exhibit conductivity ≤5 µS/cm (equivalent to ASTM Type III or typical RO output). Higher conductivity feed water accelerates ion exchange resin exhaustion and may trigger early alarms.
Can the UP-N Series be connected to a central RO system?

Yes—its inlet pressure tolerance (0.1–0.4 MPa) and flow-rate adaptability (28 L/h or 48 L/h models) make it suitable for direct integration with facility-wide RO loops.
Is the system compliant with ISO/IEC 17025 accreditation requirements?

While the hardware itself is not accredited, its documented performance consistency, calibration traceability (via NIST-traceable resistivity sensor), and event logging capability support method validation under ISO/IEC 17025 Clause 5.9.
How often do consumables require replacement?

Typical service intervals range from 6–12 months depending on feed water quality and daily usage volume; the system provides real-time remaining capacity estimates for each module.
Does the UP-N Series support validation documentation packages (DQ/IQ/OQ/PQ)?

Yes—Chu Ding Technology provides standardized validation templates, material certifications (CoA), and factory test reports to facilitate user-led qualification activities.