Sievers PURELAB Flex Ultra Pure Water System

Overview

The Sievers PURELAB Flex Ultra Pure Water System is an engineered solution for laboratories requiring continuous, real-time monitoring and delivery of Type I ultrapure water with exceptionally low total organic carbon (TOC) levels—typically < 5 ppb. Designed around a closed-loop, full-spectrum UV oxidation principle (185/254 nm), the system performs on-line, non-diverted TOC measurement directly in the main water stream—not via offline or time-delayed sampling. This architecture ensures that every displayed TOC value corresponds precisely to the water being dispensed at that moment, eliminating the 4–8 minute analytical lag inherent in conventional bypass-style TOC analyzers. The system integrates pre-treatment compatibility with municipal or purified feedwater (e.g., reverse osmosis or deionized water), and features intelligent inlet water quality diagnostics that trigger actionable alerts when incoming conductivity, pressure, or particulate load exceeds predefined thresholds—preventing membrane fouling, resin exhaustion, and downstream contamination.

Key Features

• Real-time, in-line TOC monitoring using dual-wavelength UV oxidation (185 nm for organic breakdown, 254 nm for quantification), delivering immediate, representative data without sampling delay or dilution artifacts.
• Multi-point dispensing architecture: supports wall-mounted, benchtop, and height-adjustable vertical columns; includes ergonomic handheld dispensing handle with smooth linear travel along the central support rail.
• Green, chemical-free sanitization protocol utilizing a single, replaceable UV-C disinfection cartridge—no hazardous reagents, no mixing, no neutralization, and no downtime beyond standard cycle duration (≤30 min).
• Plug-and-play purification modules with embedded RFID chips compliant with GLP traceability requirements; each cartridge stores fill material composition, manufacturing batch number, production date, installation timestamp, and cumulative usage history.
• USB 2.0 interface for secure, audit-ready data export—including system logs, TOC trends, alarm records, and cartridge lifecycle metadata—supporting IQ/OQ/PQ documentation and regulatory review.
• Intelligent feedwater diagnostics with configurable thresholds for conductivity, flow rate, and pressure; visual and audible alerts notify users of substandard inlet conditions before they impact purification performance or consumable lifespan.

Sample Compatibility & Compliance

The PURELAB Flex is validated for consistent production of water meeting ASTM D1193-20 Type I specifications, ISO 3696:1987 Grade 1, and CLSI EP22-A2 guidelines for clinical laboratory reagent water. Its TOC stability (18.2 MΩ·cm at 25 °C) support critical applications including HPLC mobile phase preparation, LC-MS solvent formulation, cell culture media supplementation, and molecular biology workflows (e.g., PCR, sequencing, transfection). The system’s firmware and data handling architecture support 21 CFR Part 11 compliance when deployed with appropriate access controls and electronic signature protocols. All purification modules are manufactured under ISO 13485-certified processes, and the system design adheres to IEC 61000-6-2/6-3 electromagnetic compatibility standards.

Software & Data Management

Data integrity is maintained through timestamped, tamper-evident logging stored locally on internal flash memory (retention ≥12 months). USB export enables integration with LIMS or ELN platforms via CSV or XML schema. Cartridge RFID data is automatically synchronized upon installation, enabling automated replacement scheduling and usage-based maintenance planning. Audit trails include operator ID (when configured), event type, timestamp, and contextual parameters—fully aligned with GLP and GMP documentation expectations. No cloud connectivity or remote telemetry is enabled by default, preserving network isolation where required.

Applications

• HPLC and UHPLC gradient eluent preparation requiring minimal carbon background and consistent baseline stability.
• LC-MS and GC-MS solvent systems where trace organics induce ion suppression or column degradation.
• Cell culture and stem cell expansion workflows demanding endotoxin-free, low-TOC water for media and buffer preparation.
• Nucleic acid purification, qPCR master mix preparation, and CRISPR reagent formulation sensitive to nuclease or oxidant residues.
• Calibration standard preparation for ICP-MS and AAS, where blank contamination must remain below detection limits.
• Pharmaceutical QC labs performing water-for-injection (WFI)-adjacent testing per USP guidance.

FAQ

Does the PURELAB Flex meet USP requirements for purified water?
Yes—the system is designed to produce water compliant with USP Purified Water monograph specifications when fed with appropriately pre-treated source water (e.g., RO or EDI effluent); final validation must be performed per site-specific PQ protocols.
Can the TOC sensor be calibrated in-house?
No—the dual-wavelength UV sensor is factory-calibrated and sealed; field calibration is not supported. Performance verification is conducted via standard addition of potassium hydrogen phthalate (KHP) during system qualification.
Is the RFID chip in the purification cartridge readable by third-party LIMS?
Yes—cartridge metadata is exported in standardized CSV format via USB; custom API integration requires prior validation with Veolia Technical Support.
What is the expected service life of the UV oxidation lamp?
The 185/254 nm lamp is rated for 12,000 hours of continuous operation; system firmware tracks cumulative runtime and prompts replacement at 11,500 hours.
Does the system support remote monitoring via Ethernet or Wi-Fi?
No—PURELAB Flex is a standalone, air-gapped system. Network connectivity is intentionally omitted to ensure cybersecurity compliance in regulated environments.