Ultrapure water systems are water treatment equipment that employs methods such as pretreatment, reverse osmosis technology, ultrapurification treatment, and post-treatment to almost completely remove conductive media from water, as well as reduce non-dissociable colloidal substances, gases, and organic matter to very low levels. Ultrapure water systems are also known as: ultrapure water units, ultrapure water equipment, ultrapure water instruments, ultrapure water systems, laboratory ultrapure water units, etc. The resistivity of ultrapure water produced by these systems should generally exceed 10 megohms; water with a resistivity above 10 megohms is considered ultrapure. High-quality ultrapure water output can reach 18.25 megohms.
Features of Xinrui Laboratory Reverse Osmosis Ultrapure Water System
1. Equipped with a complete purification unit, it uses tap water as input and produces pure water and ultrapure water as output. It yields water of different standards to meet various laboratory water needs.
2. The new laboratory ultrapure water system produces 40 times more ultrapure water per unit than similar imported products, with a water production cost one-fiftieth of other products.
3. If the source water quality is less than 2000 μS and hardness is ≤450 ppm, the system can ensure stable output water quality below 5 μS/cm, with source water utilization rates reaching 60%-80%.
4. Users can also quantitatively draw pure water and ultrapure water. By setting the desired volume, the system automatically produces the appropriate amount of water, with draw volumes freely adjustable from 10 milliliters to 200 liters, and quantitative accuracy within ±2 ml.
5. Users can store and query data in real time through the fully intelligent monitoring system, enabling trend analysis. The system supports multiple languages and multiple users, with separate data recording.
6. Features a true-color LCD touch screen with a graphical human-machine interface, allowing one-step operation and online information queries. All monitoring data is collected in real time and can be viewed online without external computer storage, with data storage capacity exceeding one year.
7. Consumables for the purification unit are reasonably placed, and components are plug-and-play, making calibration, maintenance, cleaning, disinfection, and sampling during system validation easier.
The principle and steps for producing ultrapure water with the Xinrui Laboratory Reverse Osmosis Ultrapure Water System are as follows:
1. Source water: Tap water, ordinary distilled water, or ordinary deionized water can be used as source water.
2. Mechanical filtration: Removes mechanical impurities such as rust and other suspended particles through sand core filter plates and fiber columns.
3. Activated carbon filtration: Activated carbon, a broad-spectrum adsorbent, adsorbs gaseous components like residual chlorine in water, as well as bacteria and certain transition metals that can damage reverse osmosis membranes, so their removal is essential.
4. Reverse osmosis membrane filtration: Filters out over 95% of electrolytes and macromolecular compounds, including colloidal particles and viruses. The removal of most ions significantly extends the lifespan of ion exchange columns.
5. UV digestion: Uses short-wave (180nm-254nm) ultraviolet radiation to break down small organic compounds, such as methanol and ethanol, which are not easily adsorbed by activated carbon, converting them into CO2 and water to reduce TOC levels.
6. Ion exchange unit: Mixed ion exchange beds are a decisive method for removing ions from water. Obtaining ultrapure water through multi-stage mixed beds is not difficult. However, TOC levels primarily come from the resin bed. Therefore, high-quality ion exchange resin is critical. High-quality resin is chemically stable, non-degradable, and free of oligomers, monomers, and additives. "Nuclear-grade resin" likely falls into this category. The higher the resin quality, the better.
7. 0.2μm membrane filtration removes particles from water to less than 1 per milliliter (smaller than 0.2μm). Water produced after these steps is ultrapure and should meet the requirements for various instrumental analyses, high-purity analyses, and measurements.
Performance Features of the RUPT Series Ultrapure Water System
· Self-check upon startup, large-screen LCD dot matrix display with Chinese interface.
· Animated program operation display, water production and internal circulation interface display, full water level interface display, pure water and ultrapure water quality alarm function.
· Fully automatic microcomputer control system with multi-level menu operation.
· Simultaneous online monitoring of two water quality parameters, real-time monitoring of RO water and ultrapure water quality and temperature; optional three-way online water quality monitoring, including source water quality (inlet water quality monitoring).
· Fully automatic RO membrane anti-scaling flushing program extends RO membrane lifespan, with automatic backwashing every 2 hours.
· No water alarm, full water alarm, source water, RO water, and ultrapure water (parameters customizable)超標(biāo)報(bào)警, consumable end-of-life alarm, automatic fault detection for safety assurance.
· Special startup password, system settings protected by password to prevent unauthorized changes.
· Comprehensive historical alarm, historical water draw records, and consumable management functions.
· Consumable usage alarm function.
· Shutdown/power-off automatic memory function, all pipelines NSF certified.
· Compatible with pressure tank and water tank level-based water production modes, flexible operation.
· Special timed water draw function (1-99 minutes).
· Dual-quality water output, one machine for two uses (can draw two types of water simultaneously).
· Multiple specifications of water storage tanks available to meet different needs (optional).
· Imported nuclear-grade resin, full downflow ultrapurification column design to ensure water quality at all times.
· Dual-wavelength (185nm & 254nm) imported UV lamp for effective sterilization, TOC reduction, and enhanced system applicability.
· Imported 0.45μm PES polyethersulfone composite membrane terminal sterilizing filter to ensure sterile water quality.
· Equipped with ultrapure water circulation system to maintain low bacterial contamination levels (optional).
· USB HOST interface (optional) supports historical data export, connects to USB drives, automatically generates Excel spreadsheets, and enables direct printing.
· Fixed-quality water draw function (1-18.25 MΩ·cm@25°C) (optional) (ultrapure water below set value will not be drawn).
· Inlet water quality超標(biāo)報(bào)警 display (optional).
· Ultrapure water constant pressure system.
· Automatic startup after water use with enhanced pretreatment.

Workflow示意:
Tap water → PP cotton filter → carbon powder filter → PP cotton filter → booster pump → reverse osmosis R.O. unit → pure water → ultrapurification unit → pure water/ultrapure water outlet