Technology
Technology
Water Filtration That Keeps Natural Minerals, for Better Health
We’ve taken our hollow fiber membrane technology to a higher level of performance for a wide range of water purifier models, with standout benefits in cleanliness, safety, and the retention of natural minerals.
Japan’s Leader in Drinking Water Filtration Innovation
As early as 1970, Mitsubishi Rayon (now Mitsubishi Chemical Cleansui) became the first company in the world to successfully research and develop high-precision polyethylene “hollow fiber membrane” technology, using it in blood purification systems and for direct drinking water filtration.
Because We Know “Minerals in Water” Matter to Your Health
The natural minerals in drinking water play an important role in immunity and bodily functions. That’s why we combine hollow fiber membranes with a multi-layer filtration system to deliver water that’s clean, safe, and full of natural goodness in every drop.
Mitsubishi Cleansui
4 Highlights of Hollow Fiber Membrane Technology
Large filtration surface area
Millions of pores across the membrane surface let water flow through freely without clogging, handling large volumes with micron-level filtration while retaining the minerals your body benefits from.
Ultra-fine 0.01-micron pores
Up to 4 times the filtration area of flat-sheet filters and 10 times that of ordinary activated carbon, so it filters out impurities effectively without clogging and lasts longer.
Chemical-free
The membrane is made from high-quality polyethylene with no solvents or plasticizers, so you can be sure the filtered water is clean, safe, and ready to drink.
Durable and long-lasting
Made with a special fiber melting and stretching process for exceptional strength, it can be used continuously for up to 12 months, even under varying conditions and water pressures.
A Smart 4-Layer Filtration System, All in One
Mitsubishi Cleansui’s filtration technology removes up to 17 groups of harmful contaminants (under Japan’s JIS 3201 standard) by combining 4 filtration layers in a single cartridge. It is well suited to tap water quality in Thailand and retains the natural minerals that are good for your health, giving you clean, safe water you can drink straight from the faucet.
A 4-Layer Filtration Structure for Truly Clean Water
Non-woven Fabric Layer
Captures large impurities and suspended solids such as dust, particles, and rust, using a 3D structure that traps contaminants from 0.01 mm, without chemicals.
Ion Exchange Fiber Layer
Removes harmful heavy metals such as lead, manganese, iron, and mercury, with 10–100 times the ion exchange and adsorption capacity of granular systems. Stable and durable, it doesn’t swell in water.
Activated Carbon Layer
Adsorbs residual chlorine, organic compounds, pesticides, and unpleasant odors without reducing the water’s natural minerals. Mitsubishi Cleansui’s activated carbon is up to 3 times more effective than ordinary carbon.
Hollow-Fiber Membrane Layer
Water permeates from the outer surface into the inside of the fibers through ultra-fine pores (0.01 micron), thoroughly filtering out extremely small contaminants such as algae, microorganisms, bacteria, turbidity, and some metals, while letting beneficial minerals (Na⁺, K⁺, Mg²⁺, Ca²⁺) pass through.
Cutting-Edge Filtration Technology from Japan
Fast, consistent filtration
A large filtration surface delivers a flow rate of up to 3 L/min without the need for a pressure pump.
Easy to use, with just one cartridge
Saves space, installs easily, and makes routine cartridge replacement simple.
Safety you can count on
A leak-prevention system protects both you and the electrical appliances in your home.
Real Test Results: Hollow Fiber Technology Completely Removes Rust
International Awards & Safety Certifications
NSF Certification
Certification from the WHO Collaborating Center for Food Safety, Water Quality, and the Environment
Japanese Industrial Standards (JIS)
Certification to the standards used for industrial activities in Japan
Japan Food Research Laboratories (JFRL)
Certification from the Japan Food Research Laboratories
Design Awards
Red Dot Design Award
An international award for design and product innovation
Good Design Award
The design award with the longest history, presented by the Japan Institute of Design Promotion
Live Healthier with Cleansui
Hollow fiber membrane technology powers the water filtration devices across the Cleansui ecosystem to deliver complete clean water solutions for every need, so you can enjoy convenience while taking care of your health every day.