Milli-Q® Super-Q Plus Ultra Pure Water System
| Brand | Milli-Q |
|---|---|
| Origin | France |
| Manufacturer | Merck KGaA |
| Product Type | Imported Laboratory Ultra-Pure Water System |
| Model | Super-Q Plus |
| Resistivity | 18.2 MΩ·cm @ 25 °C |
| Heavy Metals & Soluble Silica | < 0.1 ppb |
| Total Organic Carbon (TOC) | < 3 ppb |
| Microbial Count | < 0.01 CFU/mL |
| Endotoxin | < 0.01 EU/mL |
| Particles (> 0.1 µm) | < 0.1 particles/mL |
| Flow Rate | Up to 12 L/min |
| Purification Stages | Pre-filter + Dual Ion Exchange + Organex-Q + Optional Durapore TPE Final Filter |
Overview
The Milli-Q® Super-Q Plus Ultra Pure Water System is a high-capacity, on-demand laboratory water purification platform engineered for the continuous production of Type I (reagent-grade) ultrapure water from pretreated feed water—such as reverse osmosis (RO), distillation, or Elix®-generated purified water. Unlike traditional storage-based systems, the Super-Q Plus eliminates the need for intermediate reservoirs, thereby mitigating risks associated with biofilm formation, organic leaching, and particulate recontamination. Its core architecture leverages a closed-loop, low-shear internal recirculation circuit that operates automatically every hour during idle periods, maintaining stable resistivity and TOC performance without operator intervention. The system is designed and manufactured by Merck KGaA in France and conforms to international standards for analytical and life science applications—including ISO 3696:1987 (Grade 1), ASTM D1193-06 (Type I), and CLSI EP22-A guidelines for water quality verification.
Key Features
- On-demand ultrapure water generation at up to 12 L/min, eliminating dependence on storage tanks and minimizing microbial regrowth risk
- Integrated hourly automatic recirculation loop ensures consistent water quality between uses—critical for GLP/GMP-compliant environments
- Modular purification architecture: configurable combinations of Super-C (organic removal), Ion-Ex (ionic contaminant removal), and Organex-Q (trace organics polishing) cartridges
- Optional final-stage filtration using Durapore® TPE membrane (0.22 µm hydrophilic PES) for ultra-low bacterial and endotoxin retention (< 0.01 CFU/mL and < 0.01 EU/mL)
- Real-time monitoring via built-in high-accuracy resistivity sensor (calibrated per ASTM D1125) and digital display showing live conductivity/resistivity values
- Feed pressure gauge enables proactive detection of upstream pretreatment issues (e.g., RO membrane fouling or pump failure)
- Compact, service-friendly design with tool-free cartridge replacement and intuitive status indicators
Sample Compatibility & Compliance
The Super-Q Plus delivers water meeting stringent specifications required for sensitive analytical techniques including HPLC, LC-MS, ICP-MS, and cell culture media preparation. Its output consistently achieves:
- Resistivity ≥ 18.2 MΩ·cm at 25 °C (ASTM D1125 compliant)
- TOC ≤ 3 ppb (measured by UV-persulfate oxidation, per USP and EP 2.2.44)
- Heavy metals and soluble silica < 0.1 ppb (ICP-MS detectable levels)
- Particle count 0.1 µm (verified per ISO 21501-4)
- Endotoxin < 0.01 EU/mL (LAL assay compliant with USP )
System validation documentation supports IQ/OQ/PQ protocols and aligns with FDA 21 CFR Part 11 requirements when integrated with compatible data management software.
Software & Data Management
While the base Super-Q Plus operates via standalone hardware controls, it is fully compatible with Merck’s Elix® Connect and Milli-Q® Insight software platforms for remote monitoring, audit-trail logging, and preventive maintenance scheduling. These tools support electronic record integrity, user access control, and automated report generation—enabling compliance with ISO/IEC 17025, GLP, and pharmaceutical quality systems. All critical parameters (resistivity, flow duration, cartridge usage hours, alarm history) are timestamped and exportable in CSV or PDF formats.
Applications
- Preparation of cell and tissue culture media where endotoxin and trace metal contamination must be minimized
- Rinsing and cleaning of semiconductor wafers and microelectronic components requiring particle-free rinse water
- Mobile phase preparation for UHPLC and gradient HPLC systems demanding ultra-low TOC and ionic background
- Calibration standards and blank preparation for trace elemental analysis (ICP-OES, ICP-MS)
- Reagent formulation in molecular biology workflows including qPCR, NGS library prep, and CRISPR applications
- Final rinse water for sterilized glassware and stainless-steel equipment in cleanroom environments
FAQ
What feed water quality is required for optimal Super-Q Plus performance?
RO water with resistivity > 0.1 MΩ·cm and TOC < 50 ppb is recommended. Distilled or Elix®-grade water may also serve as suitable inlet sources.
Can the system be validated for GMP environments?
Yes—the modular design, calibrated sensors, and compatibility with Merck’s validation-ready software enable full IQ/OQ/PQ execution per Annex 15 and EU GMP guidelines.
How often must purification cartridges be replaced?
Cartridge lifetime depends on feed water quality and daily usage volume; typical service intervals range from 6 to 12 months. The system provides visual and audible alerts when capacity thresholds are approached.
Is the Super-Q Plus compatible with central water distribution networks?
It is designed for point-of-use operation only. For centralized distribution, Merck offers the Milli-Q® IQ 7000 series with integrated loop circulation and UV disinfection.
Does the system meet USP Purified Water and Water for Injection (WFI) specifications?
No—it produces Type I ultrapure water, not WFI. WFI requires still or vapor-compression distillation per USP , whereas the Super-Q Plus is intended for non-sterile, non-pyrogenic applications requiring highest purity.
