AVIDITY Cascada II.I Ultra Pure Water System

Overview

The AVIDITY Cascada II.I Ultra Pure Water System is a fully integrated, high-performance laboratory water purification platform engineered for precision-critical applications in analytical chemistry, molecular biology, cell culture, and pharmaceutical R&D. Designed to convert municipal tap water into consistent, on-demand Type I ultra-pure water (per ASTM D1193, ISO 3696, CLSI, USP <1231>, EP 2.2.44, and ChP), the system employs a multi-stage, modular purification architecture grounded in proven physical and electrochemical principles: dual-stage reverse osmosis (RO), ion exchange with smart-cartridge IC validation, 185/254 nm UV photo-oxidation, and final 0.2 µm membrane filtration with endotoxin-retentive polishing. Its closed-loop recirculation design—coupled with continuous TOC monitoring, real-time resistivity tracking, and UV-irradiated storage tank—ensures thermodynamic stability and chemical inertness of output water, minimizing CO₂ absorption and microbial regrowth. The system operates under strict adherence to GLP/GMP data integrity requirements, supporting audit-ready operation across regulated environments.

Key Features

• Integrated dual-stage RO module delivering stable permeate conductivity ≤5 µS/cm—even with feedwater conductivity up to 2000 µS/cm—extending downstream consumable life by >40% versus single-stage systems.
• Smart-cartridge architecture with embedded IC chips for all pre-filters, DI columns (standard, low-TOC, low-boron variants), and terminal filters—ensuring correct installation, automatic usage tracking, and predictive replacement alerts.
• 7-inch full-color capacitive touchscreen interface with intuitive icon-based navigation, multilingual support (English, Chinese, Japanese, Korean), and context-aware visual feedback (color-coded status indicators: blue = normal, amber = warning, red = critical).
• Real-time, simultaneous monitoring of resistivity (0.01–18.2 MΩ·cm), TOC (<5 ppb), temperature (±0.2 °C), flow rate (up to 2 L/min), and tank level—displayed directly on the touch interface and remote dispensing handle.
• Patented leak management system featuring dual-sensor floor pan (detection threshold: 0.8 mm water height) and integrated drip sensors in both prefiltration and main chassis zones—automatically shutting down water supply upon detection.
• UV-sterilized stainless-steel reservoir with dual-level float sensors (10% low-level cutoff, 100% nominal fill, 110% overfill protection), recirculation pump, and hydrophobic air filter (0.2 µm PTFE) blocking ambient CO₂, VOCs, particulates, and airborne microbes.

Sample Compatibility & Compliance

The Cascada II.I produces two concurrent water grades from a single feed source: Type II purified water (≥1 MΩ·cm, TOC <50 ppb) suitable for glassware rinsing, buffer preparation, and HPLC mobile phase make-up; and Type I ultra-pure water meeting or exceeding specifications defined in ASTM D1193-20 (Type I), ISO 3696:1987 (Grade 1), CLSI C3-A4, JIS K 0577, USP <1231>, European Pharmacopoeia 2.2.44, and Chinese Pharmacopoeia (ChP) Appendix IX J. Endotoxin levels remain below 0.001 EU/mL—validated per LAL assay—and microbial counts are maintained at <0.1 CFU/mL through continuous UV irradiation and sterile 0.2 µm final filtration. All system firmware and data logs comply with FDA 21 CFR Part 11 requirements for electronic records and signatures when configured with optional audit trail and user access control modules.

Software & Data Management

System operation, diagnostics, and historical data are managed via an embedded Linux-based controller with non-volatile memory retention. Real-time parameters—including conductivity, TOC, pressure differentials across each stage, cartridge usage hours, and UV lamp intensity—are logged at 1-minute intervals and exportable via RS232 serial interface or removable SD card (formatted FAT32). Built-in automated sanitization cycles (thermal + chemical) follow programmable schedules and generate timestamped validation reports. Optional software packages enable integration with Laboratory Information Management Systems (LIMS) via Modbus TCP or OPC UA protocols. All calibration events, alarm histories, and maintenance logs are time-stamped, user-identified, and tamper-evident—supporting full traceability during regulatory inspections.

Applications

The Cascada II.I serves as a foundational utility for laboratories requiring reproducible, contamination-free water across diverse workflows: preparation of HPLC and UHPLC eluents; synthesis and dilution of standards for ICP-MS, GC-MS, and LC-MS/MS; formulation of cell culture media and reagents for qPCR, NGS library prep, and CRISPR editing; cleaning of sensitive optical components and semiconductor wafers; and compliance-driven QC testing in pharmaceutical manufacturing (e.g., dissolution media, rinse water for sterile vials). Its low-boron and low-TOC column options specifically address trace-metal interference in elemental analysis and carbon-background suppression in ultra-trace organic quantification.

FAQ

What is the maximum flow rate for Type I ultra-pure water?
Up to 2 L/min at the point-of-use dispensing handle, with system output rated at 30 L/h.
Does the system support remote monitoring or network connectivity?
Yes—via optional Ethernet module enabling SNMP-based status polling and secure HTTPS web interface access.
How often must consumables be replaced?
Replacement intervals are dynamically calculated based on actual usage metrics (volume processed, pressure drop, TOC drift); typical service life ranges from 6–12 months depending on feedwater quality.
Is the system compliant with FDA 21 CFR Part 11?
Fully compliant when equipped with the Audit Trail & Electronic Signature option package, including role-based access control, biometric or PKI login, and immutable log archiving.
Can the system be validated per IQ/OQ/PQ protocols?
Yes—AVIDITY provides vendor-qualified validation documentation templates, test scripts, and on-site qualification support aligned with GAMP5 and ISO/IEC 17025 requirements.