Thermo Scientific GenPure xCAD Ultra-Pure Water System
| Brand | Thermo Fisher Scientific |
|---|---|
| Origin | Imported (Manufactured Outside China) |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Water Grade | ASTM Type I / ISO 3696 Grade 1 |
| Resistivity | 18.2 MΩ·cm @ 25 °C |
| TOC | 1–5 ppb |
| Microbial Count | < 1 CFU/mL |
| Endotoxin | < 0.001 EU/mL |
| Particles (>0.1 µm) | < 1 particle/mL |
| RNase | ≤ 0.003 ng/mL |
| DNase | ≤ 0.4 pg/µL |
| UV Wavelengths | 185 nm & 254 nm |
| Flow Rate | ≤ 2 L/min (up to 1.2 L/min at point-of-use arm) |
| Dimensions (W×D×H) | 372 × 330 × 615 mm (main unit) |
| Desktop xCAD arm | 260 × 530 × 725 mm |
| Wall-mounted xCAD arm | 260 × 530 × 655 mm |
| Power Consumption | 0.1 kW |
| Inlet Requirements | RO/DI/distilled water, conductivity < 2 µS/cm (xCAD-specific), TOC ≤ 50 ppb, pressure 0.1–6 bar, temp. 2–35 °C |
| Compliance | ASTM D1193, ISO 3696, CLSI CLRW, USP <645>, GLP/GMP-ready with audit trail and password protection |
| Interface | RS-232 with configurable logging interval |
| Data Storage | Error log history for up to 4 weeks |
| Certifications | IQ/OQ documentation available (E5013318 for xCAD series) |
Overview
The Thermo Scientific GenPure xCAD Ultra-Pure Water System is an engineered solution for laboratories requiring continuous, on-demand production of ultrapure water meeting ASTM Type I, ISO 3696 Grade 1, CLSI CLRW, and USP specifications. It employs a multi-stage purification architecture combining reverse osmosis pretreatment (when integrated with compatible feed sources), dual-wavelength (185/254 nm) UV photo-oxidation, ion exchange, and optional ultrafiltration to eliminate ions, organic contaminants, microorganisms, endotoxins, nucleases, and submicron particles. The system’s core measurement integrity relies on a temperature-compensated, 0.01 cm⁻¹ cell constant resistivity sensor with platinum chip temperature monitoring (±0.1 °C accuracy), ensuring traceable, reproducible conductivity/resistivity readings per pharmacopeial standards. Designed for integration into regulated environments, the GenPure xCAD supports GLP-compliant operation through real-time data logging, user-access control, and full audit trail functionality.
Key Features
- Real-time online TOC monitoring with integrated UV intensity tracking — continuously measures oxidizable organics and alerts users when UV lamp output degrades below threshold, preventing undetected TOC excursions.
- Modular configuration flexibility: Available in six variants — Basic Analytical (xCAD), UV Organic Analysis (xCAD UV), Biochemical (xCAD UF), Life Science (xCAD UV/UF), Physicochemical (xCAD UV-TOC), and High-Functionality (xCAD UV/UF-TOC) — each validated for specific application classes.
- Fast-change, leak-proof cartridge system enabling filter replacement in seconds without interrupting operation or risking contamination.
- Precision dispensing with digital volumetric control: Adjustable delivery volume from 0.01 to 65 L per dispense, with ±0.5% accuracy and programmable flow rate (≤1.2 L/min at remote arm).
- Intelligent inlet monitoring: Conductivity sensor verifies feedwater quality; automatic error flagging occurs if incoming water exceeds preset thresholds (e.g., >2 µS/cm for xCAD models).
- Comprehensive security framework: Password-protected interface, time-stamped event logging, and configurable RS-232 data export (error logs, measurements, timestamps) compliant with FDA 21 CFR Part 11 requirements for electronic records.
Sample Compatibility & Compliance
The GenPure xCAD delivers water suitable for critical analytical and life science applications where background interference must be minimized. Its output meets stringent purity benchmarks required for HPLC mobile phase preparation, ICP-MS calibration, low-background radiochemistry, PCR master mix formulation, monoclonal antibody purification, and stem cell culture media preparation. All configurations comply with ISO 17025 traceability principles for measurement equipment. Optional IQ/OQ documentation packages (E5013318) support validation under GMP/GLP frameworks. Endotoxin and nuclease removal performance is verified per USP and , respectively. System design adheres to IEC 61010-1 safety standards for laboratory equipment.
Software & Data Management
The embedded microprocessor controls all purification stages, monitors sensor health, and stores operational history including alarm events, maintenance cycles, and UV lamp runtime. A four-week rolling error log is retained onboard with timestamped entries accessible via front-panel display or exported via RS-232. The interface supports optional GLP-compliant thermal printer integration (09.2207) for hard-copy audit trails. No proprietary software installation is required — raw ASCII-formatted data streams are compatible with common LIMS and ELN platforms. Calibration routines follow NIST-traceable protocols, and temperature compensation follows USP methodology.
Applications
- Analytical chemistry: AA, IC, ICP-OES, ICP-MS, GC-MS, and TOC analysis where blank subtraction and detector sensitivity depend on ultra-low ionic and organic backgrounds.
- Molecular biology: PCR, qRT-PCR, next-generation sequencing library prep, CRISPR editing workflows, and recombinant protein expression systems sensitive to RNase/DNase contamination.
- Cell and tissue culture: Serum-free media formulation, embryoid body differentiation, and primary neuron culture demanding endotoxin-free, nuclease-free water.
- Pharmaceutical QC: Buffer preparation for biologics stability testing, dissolution media, and cleaning validation studies aligned with ICH Q5C and Q5D guidelines.
- Calibration and reference material preparation: Trace-metal-grade standard dilutions and certified reference solution generation.
FAQ
What feedwater quality is required for optimal GenPure xCAD performance?
The system requires pre-treated feedwater — typically from a reverse osmosis or deionization unit — with conductivity ≤ 2 µS/cm, TOC ≤ 50 ppb, microbial count < 100 CFU/mL, and pressure between 0.1–6 bar. Higher inlet conductivity reduces consumable lifespan and may trigger system warnings.
How does the dual-wavelength UV system improve water purity?
The 185 nm wavelength generates hydroxyl radicals that mineralize non-volatile organics; the 254 nm wavelength inactivates microorganisms and photolyzes residual ozone. Together, they achieve >99.9% reduction in TOC and viable microbes.
Is the GenPure xCAD compliant with FDA 21 CFR Part 11?
Yes — when configured with password protection, audit trail logging, and electronic signature-capable peripherals (e.g., RS-232-connected printers), it satisfies predicate rules for electronic records and signatures in regulated environments.
Can the system be validated for GMP use?
Yes — Thermo Fisher provides IQ/OQ documentation kits (E5013318) specifically for the xCAD series, supporting installation qualification, operational qualification, and routine performance verification per Annex 15 and WHO TRS 986 requirements.
What maintenance intervals are recommended for consumables?
UV lamps require replacement every 12 months or after 9,000 hours; ultrafiltration cartridges every 6–12 months depending on usage; and polishing ion exchange columns every 3–6 months under typical load. System self-diagnosis tracks usage and prompts replacement based on actual runtime and resistivity decay profiles.
