EDI Module, Deepflow CYTTEDI20 Ultra-Pure Water System (20 L/h)
| Brand | Deepflow |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | CYTTEDI20 |
| Flow Rate | 20 L/h |
| Output Water Quality | ≥18.2 MΩ·cm @ 25°C, <5 ppb TOC, <0.1 CFU/mL, <0.02 µm particle retention |
| Power Supply | 220 VAC ±10%, 50/60 Hz |
| Dimensions (W×D×H) | 450 × 500 × 650 mm |
| Weight | 42 kg |
| Certifications | ISO 9001, CE (EMC & LVD), GB/T 33085–2016 (EDI modules for ultrapure water) |
Overview
The Deepflow CYTTEDI20 EDI Module is an electrodialysis ion exchange unit engineered for continuous, chemical-free polishing of purified water to ultrapure specifications in laboratory and pilot-scale applications. Integrated as a final-stage purification component within multi-stage ultrapure water systems, it replaces traditional mixed-bed deionization by combining ion-exchange membranes, ion-selective resins, and direct current electric fields to remove residual ionic contaminants—including Na⁺, Cl⁻, SiO₃²⁻, NH₄⁺, and trace heavy metals—from reverse osmosis (RO) permeate. Operating at a nominal flow rate of 20 L/h, the module delivers consistent resistivity ≥18.2 MΩ·cm at 25°C, total organic carbon (TOC) <5 ppb, microbiological content <0.1 CFU/mL, and particulate retention down to 0.02 µm—meeting ASTM D1193 Type I, ISO 3696 Class 1, and CLSI EP21-A2 requirements for critical analytical and life science workflows.
Key Features
- Electrodeionization architecture with stacked anion/cation exchange membranes and heterogeneous ion-exchange resin fillings ensures stable ion removal without periodic regeneration or chemical consumption.
- Integrated DC power supply with adjustable voltage (100–300 VDC) and current monitoring enables real-time optimization of ion migration efficiency under variable feedwater conductivity (typically 1–20 µS/cm RO permeate).
- Stainless steel 316L housing and wetted parts comply with USP Class VI and FDA 21 CFR Part 211 material compatibility standards for pharmaceutical-grade water systems.
- Modular design allows seamless integration into existing Deepflow or third-party ultrapure water platforms via standardized 1/2″ BSP quick-connect fittings and pressure-rated tubing (max. operating pressure: 0.6 MPa).
- Low-energy operation (≤1.2 kWh/m³) reduces long-term cost of ownership versus batch-type mixed-bed systems, while eliminating hazardous acid/base handling and associated waste disposal liabilities.
Sample Compatibility & Compliance
The CYTTEDI20 is validated for use with RO-treated feedwater meeting ASTM D5117 minimum quality (conductivity ≤25 µS/cm, silica ≤0.5 mg/L, chlorine <0.05 mg/L). It is not intended for direct connection to municipal tap water or high-hardness sources. The module conforms to GB/T 33085–2016 (Chinese national standard for EDI modules), CE-marked per EU directives 2014/30/EU (EMC) and 2014/35/EU (LVD), and manufactured under ISO 9001:2015 certified quality management system. For regulated environments, its performance data logging capability supports GLP/GMP audit trails when paired with compatible supervisory control software.
Software & Data Management
While the CYTTEDI20 operates as a standalone hardware module, it features analog 4–20 mA outputs for conductivity, flow rate, and DC current—enabling integration with PLCs, SCADA systems, or Deepflow’s optional AquaLink™ Central Monitoring Platform. This platform provides time-stamped event logging, alarm thresholds (e.g., low flow, high inlet conductivity), trend analysis over 90 days, and exportable CSV reports compliant with FDA 21 CFR Part 11 requirements for electronic records and signatures. Remote diagnostics and firmware updates are supported via Ethernet interface on higher-tier system configurations.
Applications
- HPLC, UHPLC, and LC-MS mobile phase preparation where ionic leachables compromise column longevity and detection sensitivity.
- Cell culture media formulation and buffer preparation requiring endotoxin-free, low-TOC water per USP and Ph. Eur. 2.2.48.
- Atomic absorption spectroscopy (AAS), ICP-OES, and ICP-MS calibration standard dilution to prevent spectral interference from alkali metals and transition elements.
- Microelectronics wafer cleaning and photolithography rinse steps demanding particle-free, high-resistivity water per SEMI F63 guidelines.
- Quality control laboratories performing compendial testing under USP , EP 2.2.44, or JP 17 standards for purified and water for injection (WFI) support systems.
FAQ
What feedwater quality is required for optimal CYTTEDI20 performance?
RO permeate with conductivity ≤15 µS/cm, free chlorine <0.05 mg/L, and silica <0.3 mg/L is recommended. Pre-treatment with activated carbon and 5 µm sediment filtration is mandatory.
Can the module be operated intermittently or must it run continuously?
Continuous operation is strongly advised. Intermittent cycling increases membrane scaling risk and reduces resin lifespan; if shutdown is unavoidable, system must be flushed with RO water and stored wet.
Is validation documentation available for GMP environments?
Yes—Deepflow provides IQ/OQ protocol templates, DQ summary reports, and material compliance certificates (3.1/3.2) upon request for qualified customers.
Does the CYTTEDI20 require periodic resin replacement?
No. Unlike mixed-bed vessels, the EDI stack is designed for >3 years of continuous service under specified feed conditions; performance decline indicates upstream pretreatment failure, not resin exhaustion.
How is microbial growth controlled within the module?
The applied electric field suppresses biofilm formation, and integrated UV lamp (optional accessory, 254 nm, 12 mJ/cm² dose) in downstream loop configuration meets ISO 14644-1 Class 5 air cleanliness equivalency for water distribution systems.
