Chu Ding Technology RU-T-25 Low-TOC Ultra-Pure Water System
| Brand | Chu Ding Technology |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Region of Manufacture | Domestic (China) |
| Model | RU-T-25 |
| Pricing | Upon Request |
Overview
The Chu Ding Technology RU-T-25 Low-TOC Ultra-Pure Water System is an integrated dual-stage laboratory water purification platform engineered for applications demanding ultrapure water with exceptionally low total organic carbon (TOC), microbial load, and submicron particulate content. It employs a sequential purification architecture comprising pretreatment, reverse osmosis (RO), electrodeionization (EDI) or mixed-bed deionization, dual-wavelength ultraviolet (185 nm + 254 nm) photo-oxidation, and terminal 0.2 µm sterilizing filtration. This configuration ensures consistent production of Type I ultrapure water per GB/T 6682–2008 (equivalent to ISO 3696:1987 Grade 1) and electronic-grade water per GB/T 11446.1–1997 (Class I), with real-time resistivity monitoring at 18.2 MΩ·cm @ 25 °C, TOC < 5 ppb, bacteria < 1 CFU/mL, endotoxins 0.2 µm < 1/mL. Designed for direct feed from municipal tap water (0.5–4.0 bar), the system delivers 25 L/h of RO-grade water (conductivity 1–5 µS/cm) and ≥2.0 L/min of ultrapure water on demand—making it suitable for continuous operation in analytical laboratories where baseline stability and contamination control are critical.
Key Features
- Dual-wavelength UV oxidation module (185 nm + 254 nm) sourced from U.S.-based OEM, enabling catalytic photolysis of non-volatile organics and persistent TOC down to < 5 ppb
- Terminal sterilizing filter with certified 0.2 µm pore size, manufactured in Germany and validated for bacterial retention efficiency > 7-log reduction (LRV ≥ 7)
- Integrated particle removal stage targeting colloids and submicron aggregates, achieving particle count 0.2 µm
- Real-time conductivity/resistivity sensor with temperature compensation (±0.1 °C), calibrated traceably to NIST-traceable standards
- Modular cartridge design supporting rapid replacement without system depressurization; all consumables carry batch-specific QC certificates
- Touchscreen HMI with data logging capability, configurable alarm thresholds, and event-driven maintenance prompts
Sample Compatibility & Compliance
The RU-T-25 is validated for compatibility with high-sensitivity analytical instrumentation requiring ultra-low background interference—including HPLC, UHPLC, LC-MS, GC-MS, ICP-MS, TOC analyzers, and atomic absorption spectrometry. Its output meets or exceeds requirements specified in ASTM D1193–20 (Type I water), ISO 3696:1987 (Grade 1), CLSI EP22-A (water quality for clinical laboratories), and USP “Water for Pharmaceutical Purposes.” For regulated environments, the system supports audit-ready documentation including IQ/OQ protocols, calibration records, and raw water inlet testing logs. While not pre-certified for FDA 21 CFR Part 11 compliance, its data logging architecture is compatible with third-party electronic signature and audit trail modules when deployed within validated IT infrastructure.
Software & Data Management
The embedded controller stores up to 30 days of operational history—including feed pressure, RO rejection rate, UP resistivity, TOC trend, filter usage hours, and alarm events—with export via USB 2.0 to CSV format. All parameters are timestamped and associated with operator ID (if configured). The interface supports user-level access control (admin/operator/guest), password-protected calibration adjustments, and automatic generation of daily water quality summary reports. Optional Ethernet connectivity enables integration into centralized laboratory information management systems (LIMS) via Modbus TCP or OPC UA protocols for remote monitoring and predictive maintenance scheduling.
Applications
- HPLC and UHPLC mobile phase preparation and column equilibration
- LC-MS and GC-MS solvent blanks, calibration standards, and instrument rinsing
- TOC analyzer calibration and system suitability testing
- Cell culture media preparation and buffer formulation for biologics development
- Rinsing of photomasks, optical substrates, and semiconductor wafers in cleanroom environments
- Preparation of reagents for ELISA, Western blotting, and next-generation sequencing workflows
FAQ
What is the maximum allowable feed water hardness for stable RO membrane performance?
Feed water should not exceed 200 ppm CaCO₃ equivalent; optional integrated softener cartridges are available for regions with hard municipal supply.
Can the RU-T-25 be connected to a central distribution loop?
Yes—equipped with a recirculation-compatible UP outlet port and optional 0.22 µm loop filter housing for closed-loop configurations up to 30 m total tubing length.
How frequently must the dual UV lamps be replaced?
Lamp service life is rated at 9,000 hours; the system tracks cumulative UV exposure and triggers visual/audible alerts at 8,500 hours.
Is third-party validation support provided for GMP/GLP environments?
Chu Ding Technology supplies template IQ/OQ documents and collaborates with qualified vendors to execute site-specific qualification under ISO/IEC 17025-accredited protocols.
Does the system include safeguards against backflow contamination?
Yes—non-return valves are installed at both inlet and UP outlet; additional air-gap breakers are recommended for installations above grade level.
