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-dissociating 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 be greater than 10 megohms. Water with a resistivity above 10 megohms is considered ultrapure water. 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 the feed water and produces pure water and ultrapure water as output. It yields water of different standards to meet the water needs of various laboratories.
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 feed water quality is less than 2000 μS and hardness ≦450 ppm, the system can ensure stable output water quality below 5 μS/cm, with feed 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. The draw volume can be freely set from 10 milliliters to 200 liters, with quantitative accuracy of ±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. True-color LCD touch screen with a graphical human-machine interface ensures one-step operation and online information query. All monitoring data is collected in real-time and can be viewed online without external computer storage. Data storage capacity exceeds one year.
7. Rational placement of consumables in the purification unit and plug-and-play components make calibration, maintenance, cleaning, disinfection, and sampling easier during system validation.
The principle and steps for producing ultrapure water with the Xinrui Laboratory Reverse Osmosis Ultrapure Water System are as follows:
1. Feed water: Tap water, ordinary distilled water, or ordinary deionized water can be used as feed water.
2. Mechanical filtration: Sand core filter plates and fiber columns remove mechanical impurities such as rust and other suspended solids.
3. Activated carbon filtration: Activated carbon is a broad-spectrum adsorbent that adsorbs gas components like residual chlorine in water, as well as bacteria and certain transition metals that can damage reverse osmosis membranes, so they should be removed as much as possible.
4. Reverse osmosis membrane filtration: Removes 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: Short-wave (180nm-254nm) ultraviolet irradiation decomposes 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, the TOC level mainly comes from the resin bed. Therefore, high-quality ion exchange resin is critical. High-quality resin refers to resin with excellent chemical stability, no decomposition, and free of oligomers, monomers, and additives. "Nuclear-grade resin" likely falls into this category. The higher the quality of the resin, the better.
7. 0.2μm membrane filtration removes particles in the water to 1 per milliliter (less than 0.2μm). The water produced after these steps is ultrapure water, suitable for various instrumental analysis, high-purity analysis, and measurements.
Features of the RUPT Series Ultrapure Water System
· Self-check on 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超標 alarm function.
· Fully automatic microcomputer control system, multi-level menu operation.
· Simultaneous online monitoring of 2 water quality paths, real-time monitoring of RO water and ultrapure water quality and temperature; optional 3-path online water quality monitoring, including feed 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, ultrapure water (parameters customizable)超標 alarm, 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.
· Automatic memory function on shutdown/power-off, all pipelines NSF certified.
· Compatible with pressure tank and water tank level 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, ensuring water quality at all times.
· Dual-wavelength (185nm & 254nm) imported UV lamp, effective sterilization, TOC reduction, and enhanced system applicability.
· Imported 0.45μm PES polyethersulfone composite terminal sterilizing filter membrane ensures sterile water quality.
· Equipped with ultrapure water circulation system to maintain low bacterial contamination levels (optional).
· Equipped with USB HOST interface (optional), supports historical data export, connects to USB drives, automatically generates Excel spreadsheets for direct printing.
· Fixed-quality water draw function (1-18.25 MΩ-cm@25°C) (optional) (ultrapure water below set value will not be drawn).
· Feed water quality超標 alarm display (optional).
· Ultrapure water constant pressure system.
· Enhanced pretreatment with automatic startup after water use.

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