ULUPURE ULPS Custom-Built Ultra-Pure Water System

Overview

The ULUPURE ULPS Custom-Built Ultra-Pure Water System is an engineered solution for centralized, high-reliability ultrapure water production in clinical laboratory environments—particularly hospital clinical laboratories and diagnostic centers requiring continuous, compliant feedwater for analytical instrumentation, reagent preparation, cell culture, and molecular diagnostics. Designed around a multi-stage purification architecture—including pretreatment, reverse osmosis (RO), and final polishing—the system adheres to the physicochemical and microbiological specifications defined in ISO 3696:1995, ASTM D1193-20 (Type I), CLSI EP23-A, GB/T 6682–2008 (Grade I), and WS/T 574–2018. Its core measurement principle relies on real-time conductivity/resistivity monitoring (via dual in-line sensors) coupled with UV oxidation–based TOC detection and ultrafiltration-based endotoxin reduction. The system’s modular configuration allows precise adaptation to local feedwater quality (e.g., municipal supply with TDS < 500 ppm, residual chlorine ≤ 0.05 mg/L, pressure 1.5–5 bar, temperature 5–45 °C) and facility-specific demand profiles (120–500 L/hr output range).

Key Features

• Configurable purification train: Single-stage RO (RO), dual-stage RO (DRO), electrodeionization (EDI), or mixed-bed (MB) polishing—selected based on source water analysis and regulatory risk assessment.
• Stainless steel 304 sanitary frame and fluid path components, including optional electropolished 316L storage tanks for extended microbial stability and reduced leachables.
• PLC-based automation with HMI touchscreen interface enabling full operational visibility: real-time resistivity/TOC/endotoxin trend logging, alarm history retrieval, scheduled system flush cycles, and event-triggered maintenance alerts.
• Enhanced pretreatment with precision metering pump for antiscalant dosing, extending RO membrane service life and reducing fouling frequency.
• Dual-conductivity monitoring architecture: upstream RO permeate sensor (for rejection ratio validation) and downstream polishing loop sensor (for final quality verification).
• Integrated constant-pressure delivery via digital PID-controlled booster pump system, supporting stable flow rates across variable demand without pressure spikes or cavitation risk.
• Full compliance-ready control logic: automatic start-up self-test, low/high-pressure interlocks, phase-loss and overcurrent protection, tank-level dependent pump sequencing, and programmable auto-flush protocols.

Sample Compatibility & Compliance

The ULPS system delivers water meeting or exceeding the strictest international benchmarks for Type I ultrapure water. It supports compatibility with sensitive downstream applications including HPLC mobile phase preparation, ICP-MS sample dilution, ELISA assay buffers, PCR master mix formulation, and mammalian cell culture media. All wetted materials comply with USP Class VI biocompatibility requirements. System validation documentation aligns with GLP and GMP principles; audit trails (including user actions, parameter changes, and alarm events) are timestamped and non-erasable per FDA 21 CFR Part 11 data integrity guidelines when configured with secure login and electronic signature modules. Certificates of conformance for critical components (e.g., GE Healthcare or Dupont RO membranes, CNP/Grundfos high-pressure pumps, Parker Hannifin sanitary fittings) are provided upon commissioning.

Software & Data Management

The embedded PLC controller logs all process variables—including feed pressure, permeate conductivity, TOC concentration, UV lamp intensity, tank level, and pump runtime—at configurable intervals (default: 1-minute resolution). Data export is supported via USB or Ethernet to CSV or SQLite formats for integration into LIMS or enterprise QA databases. Optional cloud telemetry enables remote health monitoring and predictive maintenance scheduling. Audit trail functionality records operator ID, timestamp, action type (e.g., “manual flush initiated”, “setpoint modified”), and pre-/post-change values—fully traceable for internal audits or regulatory inspections. Calibration logs for conductivity sensors and TOC analyzers are maintained separately with due-date tracking.

Applications

• Hospital clinical laboratories: Centralized feed for hematology analyzers, immunoassay platforms (e.g., Roche Cobas, Siemens Atellica), and automated urinalysis systems.
• Reference laboratories: Preparation of calibration standards for clinical chemistry and toxicology testing.
• Research cores: Support for next-generation sequencing library prep, CRISPR editing workflows, and single-cell RNA-seq buffer formulation.
• Pharmaceutical QC labs: USP compliant water for dissolution media and cleaning validation studies.
• Biobanking facilities: Ultrapure rinse water for cryovial washing and automated storage system maintenance.

FAQ

What feedwater specifications are required for optimal ULPS performance?
Municipal tap water with TDS ≤ 500 ppm, free chlorine ≤ 0.05 mg/L, pressure 1.5–5 bar, and temperature 5–45 °C. Pre-filtration and carbon polishing are mandatory if chlorine exceeds threshold.
Can the system be validated according to ISO 9001 or ISO 13485?
Yes—ULUPURE provides IQ/OQ documentation templates, FAT/SAT protocols, and raw data packages compatible with ISO 13485:2016 Annex A and ISO 9001:2015 Clause 8.5.2 requirements.
Is endotoxin removal certified to USP ?
Final polishing includes 10 kDa ultrafiltration modules validated for ≥3-log reduction of endotoxin; certificate of test report available upon request.
How often does the RO membrane require replacement?
Under typical municipal feedwater conditions with proper pretreatment, RO membranes achieve 2–3 years of service life; replacement interval is tracked automatically via pressure differential and rejection rate decay algorithms.
Does the system support 21 CFR Part 11-compliant electronic records?
When equipped with password-protected user roles, digital signature capability, and immutable audit trail logging, the system meets technical controls outlined in 21 CFR Part 11 Subpart B.