Laboratory Ultra-Pure Water System RUPT

Laboratory ultrapure water approaches the theoretical purity limit in terms of resistivity, organic content, particulate and bacterial levels. It is pre-purified through ion exchange, RO membrane, or distillation methods, followed by nuclear-grade ion exchange refinement to obtain ultrapure water. Typically, ultrapure water has a resistivity of up to 18.2 MΩ·cm, TOC <10 ppb, filters out particles as small as 0.1 μm or even smaller, and has a bacterial content below 1 CFU/ml. Ultrapure water is suitable for various precision analytical experiments, such as High-Performance Liquid Chromatography (HPLC), Ion Chromatography (IC), and Inductively Coupled Plasma Mass Spectrometry (ICP-MS). To understand laboratory ultrapure water systems, it is essential to know the impurities in water that need to be removed. Water impurities are generally categorized into nine types.
Particulate matter. Includes visible particulate impurities such as sediment, rust, algae, and suspended solids. Particulate matter is the primary source of turbidity, color, and odor.
Colloidal substances. Colloidal substances are larger than ionic substances but smaller than particulate matter. Colloids are aggregates of many molecules and ions.
Ionic substances. Include cations and anions. Ionic substances are usually soluble in water and can be removed by methods such as ion exchange or desalination.
Non-reactive dissolved gases. Refer to gases like nitrogen that do not undergo chemical reactions with water, introduce ionic contaminants into the water, or affect the pH of the water.
Reactive dissolved gases. Common dissolved gases in natural water include oxygen, carbon dioxide, and sometimes hydrogen sulfide and ammonia. Most of these dissolved gases are corrosive to metals and are significant factors causing corrosion in water system metals.
Microorganisms. Mainly refer to the bacterial content in water.
Pyrogens. Pyrogens, also known as bacterial endotoxins, are primarily considered in pharmaceutical water, especially injection water, where pyrogen content control is critical.
Organic matter. Organic matter in water mainly consists of humic acids, pollutants from domestic sewage, and industrial wastewater.
Residual disinfectants. To control bacterial content in water, water companies add disinfectants to manage total bacterial count. Commonly used disinfectants are chlorine-based agents. When chlorine is added to water, it produces highly oxidative compounds such as residual chlorine.
Working Principle of Laboratory Ultrapure Water Systems The working principle of a laboratory ultrapure water system involves pre-treating tap water with precision filter cartridges and activated carbon cartridges to filter out particles like sediment and adsorb odors, making the tap water cleaner. Then, the water undergoes purification and desalination through a reverse osmosis (RO) unit. The purified water is stored in a storage tank, meeting the national tertiary water standard, while the wastewater from the RO unit is discharged. The RO purified water is further desalinated through a purification column to obtain Type I water or ultrapure water. Finally, if there are special requirements, ultraviolet sterilization or micro-filtration/ultrafiltration devices are added after the ultrapure water stage to remove residual bacteria, particles, pyrogens, etc. Precision filter cartridges, activated carbon cartridges, RO membranes, and purification columns are materials with relatively limited lifespans. Precision filter cartridges and activated carbon cartridges actually protect the RO membrane. RUPT Series Ultrapure Water System Performance Features
· Self-check upon startup, large-screen LCD dot matrix display with Chinese interface.
· Animated program operation display, production water and internal circulation interface display, full water level interface display, purified water and ultrapure water quality exceedance alarm function.
· Fully automatic microcomputer control system, multi-level menu operation.
· Simultaneous online monitoring of two water quality paths, real-time monitoring of RO water and ultrapure water quality and temperature; optional three-path water quality online monitoring, capable of detecting source water quality (inlet water quality monitoring).
· Fully automatic RO membrane anti-scaling flushing program, extends RO membrane lifespan, automatic backflush every 2 hours.
· No water alarm, full water alarm, source water, RO water, ultrapure water (parameters customizable) exceedance alarm, consumable end-of-life alarm, automatic fault detection, ensuring safety.
· Special startup password for the instrument, system settings protected by passwords to prevent unauthorized changes.
· Comprehensive historical alarm, historical water intake records, and consumable management functions.
· Consumable usage alarm function.
· Automatic memory function upon shutdown/power loss, all pipelines NSF certified.
· Compatible with pressure tank and water tank level-based water production modes, flexible operation.
· Special timed water intake function (1-99 minutes).
· Graded water intake, one machine for two uses (capable of simultaneously obtaining two water qualities).
· Multiple specifications of water storage tanks available to meet different needs (optional).
· Original imported nuclear-grade resin, full downflow ultrapurification column design, ensuring top water quality at all times.
· Dual-wavelength (185nm & 254nm) imported UV lamp, effective sterilization, TOC reduction, enhancing system applicability.
· Original imported 0.45μm PES polyethersulfone composite membrane terminal sterilizing filter, ensuring sterile water quality.
· Equipped with ultrapure water circulation system, maintaining low bacterial contamination levels (optional function).
· Equipped with USB HOST interface (optional), supports historical data export function, connectable to USB drives, automatically generates Excel spreadsheets for direct printing.
· Fixed-quality water intake function (1-18.25 MΩ·cm @25°C) (optional function) (ultrapure water below set value will not be dispensed).
· Inlet water quality exceedance alarm display (optional).
· Ultrapure water constant pressure system.
· Enhanced pre-treatment with automatic startup after water use.
Application Fields of Xinrui Laboratory Ultrapure Water Systems 1. Electronics, power, electroplating, lighting appliances, laboratories, food, papermaking, daily chemicals, building materials, paint manufacturing, batteries,化验, biology, pharmaceuticals, petroleum, chemicals, steel, glass, and other fields.
2. Chemical process water, chemical reagents, cosmetics, and other applications requiring pure water.
3. Monocrystalline silicon, semiconductor wafer cutting and manufacturing, semiconductor chips, semiconductor packaging, lead frames, integrated circuits, liquid crystal displays, conductive glass, cathode ray tubes, circuit boards, optical communication, computer components, capacitors, clean products, and various components production processes requiring pure water.
4. Pure water equipment, reverse osmosis equipment, boiler softened water equipment, industrial softened water equipment, food industry softened water equipment, household water softeners.