MN Series Ultrapure Water System

Updated: 2026-09-25

Overview

The MN Series Ultrapure Water System represents cutting-edge water purification technology for critical industrial and scientific applications. Developed with ISO 9001-certified manufacturing processes, this system integrates reverse osmosis (RO), electrodeionization (EDI), and ultrafiltration to achieve consistent 18.2 MΩ·cm water quality. Designed for 24/7 operation, the MN Series features a patent-pending cross-contamination prevention system that separates pretreatment and polishing loops. Its modular architecture allows customization for specific industry requirements, from ISO Class 5 cleanroom installations to mobile laboratory carts.

Structure and Working Principle

The system employs a four-stage purification process: multimedia filtration removes particulates down to 5μm, followed by dual-pass RO membranes achieving 98% salt rejection. The third-stage EDI module continuously regenerates mixed-bed resin without chemical additives, while final polishing uses 0.22μm ultrafiltration and 185/254nm UV lamps. A unique feature is the intelligent water quality feedback system, where resistivity and TOC sensors dynamically adjust purification parameters. The stainless steel distribution loop maintains positive pressure to prevent atmospheric CO2 absorption, crucial for maintaining pH stability in sensitive applications.

Key Features

The MN Series distinguishes itself through its SmartFlush technology, which automatically purges stagnant water every 2 hours to maintain purity. The system achieves <0.1 CFU/mL bacterial counts through built-in ozone sanitization and hydrophobic vent filters. For user convenience, the 10-inch color touchscreen provides real-time diagnostics including filter life indicators, flow rate tracking (5-100 L/min selectable), and water quality history graphs. Optional accessories include chilled water circulation modules and nitrogen blanketing systems for oxygen-sensitive processes.

Application Areas

In pharmaceutical manufacturing, the MN Series meets USP <645> and EP 2.2.38 standards for water for injection (WFI) preparation. Electronics manufacturers utilize its <1 ppt metal ion purity for semiconductor wafer cleaning, particularly in 7nm node fabrication. Research laboratories value the system's ability to produce both Type I (ultrapure) and Type II (RO) water simultaneously, eliminating the need for multiple units. The biotechnology sector employs its endotoxin-free (<0.001 EU/mL) output for cell culture media and PCR reagent preparation.

Maintenance and Precautions

Quarterly maintenance should include sanitization with 3% hydrogen peroxide and verification of UV lamp intensity (minimum 30,000 μW·s/cm²). The pretreatment filters require replacement every 6-12 months depending on feedwater quality (monitored via SDI-15 readings). Critical precautions include avoiding system operation below 5°C to prevent membrane damage and ensuring feedwater pressure remains within 3-6 bar. The polishing pack (including ultrafilters and ion exchange resin) typically lasts 12-18 months but should be verified through monthly resistivity tests at point-of-use.

B2B Procurement Guide

When sourcing the MN Series, verify the manufacturer's ISO 13485 certification for medical applications or SEMI F63 compliance for semiconductor use. Request factory acceptance testing reports showing 72-hour continuous operation data. For large-scale deployments, consider centralized systems with distribution pumps capable of maintaining 1.5 m/s flushing velocity in pipeline networks. Negotiate service contracts covering annual preventive maintenance and emergency response within 48 hours. Bulk procurement (5+ units) typically offers 15-20% cost savings with lead times of 8-12 weeks.