EDI Module, Deepflow CYTTEDI80 Ultra-Pure Water System (80 L/h)

Overview

The Deepflow CYTTEDI80 EDI Module is an electrodialysis ion exchange unit engineered for continuous, chemical-free polishing of reverse osmosis (RO) permeate into Type I ultra-pure water compliant with ASTM D1193-20 and ISO 3696:1987 Grade 1 specifications. Unlike traditional mixed-bed deionization requiring periodic regeneration with hazardous acids and caustics, this module employs a stacked membrane architecture—alternating cation-exchange and anion-exchange membranes interspersed with ion-selective resins—under direct current to drive ion migration toward electrodes, where they are flushed away as concentrated brine. This electrochemical process ensures stable resistivity ≥15 MΩ·cm at 25°C, low total organic carbon (95%—critical for semiconductor rinsing, HPLC mobile phase preparation, and cell culture media formulation.

Key Features

• Continuous operation without resin replacement or chemical regeneration—reducing downtime and operator exposure to corrosive reagents.
• Integrated flow control and pressure regulation optimized for consistent performance across variable RO feed quality (conductivity ≤10 µS/cm).
• Stainless steel 316L housing and PTFE-sealed internal components ensure corrosion resistance and compatibility with ultrapure water distribution systems.
• Modular design enables seamless integration into existing ultra-pure water systems or OEM skids—no structural retrofitting required.
• Low-energy consumption: typical power draw <150 W under nominal 80 L/h throughput, supporting LEED-compliant laboratory infrastructure planning.
• Real-time monitoring interface (optional RS-485/Modbus RTU) supports integration with central water management platforms for predictive maintenance logging.

Sample Compatibility & Compliance

The CYTTEDI80 is validated for use with RO-treated municipal or well water feed streams meeting minimum pretreatment criteria: silt density index (SDI) <3, free chlorine <0.1 ppm, and particulate load <1 µm. It is not intended for direct connection to raw tap water or groundwater sources. The module complies with CE marking requirements for electrical safety (EN 61000-6-3, EN 61000-6-4) and is designed to support GLP and GMP water system qualification per WHO TRS 970 Annex 4 and EU GMP Annex 1. When deployed in validated ultra-pure water systems, it contributes to meeting USP “Water for Pharmaceutical Purposes” and EP 2.2.44 “Purified Water” monographs for post-RO polishing stages.

Software & Data Management

While the CYTTEDI80 operates as a standalone hardware module, its optional digital interface supports Modbus RTU protocol for bidirectional communication with supervisory control systems. Lab managers may log operational parameters—including inlet/outlet conductivity, stack voltage, current draw, and cumulative runtime—into centralized SCADA or LIMS environments. Audit trail functionality aligns with FDA 21 CFR Part 11 when paired with compliant host software, enabling electronic signature-capable event logging for IQ/OQ/PQ documentation. No proprietary cloud platform or vendor-hosted dashboard is required; data remains under institutional IT governance.

Applications

• Final polishing stage in multi-stage ultra-pure water systems serving analytical laboratories (ICP-MS, AAS, GC-MS sample prep).
• On-demand production of ASTM Type I water for photolithography rinse baths and wafer cleaning in microelectronics R&D cleanrooms.
• Supporting ISO/IEC 17025-accredited testing labs requiring documented water quality traceability for calibration standard preparation.
• Integration into pilot-scale bioprocessing water loops where endotoxin-free, low-silica water is mandated for buffer preparation and column equilibration.
• Replacement of single-use mixed-bed cartridges in high-throughput core facilities—reducing consumables cost by >70% annually versus conventional resin-based polishing.

FAQ

What feed water quality is required for optimal CYTTEDI80 performance?
RO permeate with conductivity ≤10 µS/cm, TOC <0.5 ppm, and silica <0.1 ppm is mandatory. Pre-filtration through 1 µm absolute-rated cartridge filters and activated carbon polishing are strongly recommended.
Can the module be operated intermittently or must it run continuously?
Continuous operation is required to maintain membrane hydration and prevent scaling. If system shutdown exceeds 4 hours, a full flush cycle with RO water is necessary before restart.
Is validation documentation available for GMP water system qualification?
Yes—Deepflow provides a Factory Acceptance Test (FAT) report, material compliance certificates (3.1 EN 10204), and a modular DQ/IQ checklist aligned with ISPE Water and Steam Baseline Guide principles.
Does the CYTTEDI80 meet requirements for USP purified water specifications?
No—it produces ultra-pure water beyond USP limits; it is intended for polishing to meet USP ’s more stringent “Water for Injection” (WFI) precursor standards when integrated upstream of distillation or nanofiltration.
What maintenance intervals are recommended?
Annual inspection of electrode assemblies and membrane stack integrity is advised. Resin bed replacement is not required during normal service life (≥5 years at rated flow and feed quality).