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Nanotrap Filter

About COWAY

Coway Innovative water filtration system

Made with Coway's exceptional core technology, our highly competitive products are popular in more than 80 countries around the world. As the world's largest specialist in water filtration appliances and leading edge household well-being electronics, we have developed a product line that meets the diversified needs of global consumers through relentless research in environment-friendly products across a broad range of categories.

Increasingly recognized as a world leader in innovative household health / lifestyle technology, Coway's awards and special recognitions continue to accumulate. AWARDS

CERTIFICATES

HEAD OFFICE www.coway.com JoongAng Ilbo Bldg., 7, Sunhwa-dong, Jung-Gu, Seoul (100-759) Korea

AUG 2011 A

Hygiene

Space-saving

High Efficiency

Good Taste

Easy to use

BE WITH COWAY, ANYTIME, ANYWHERE Water is an essential element in our lives. People always need a hygienic and easy-to-use water filtration system which can be used in anywhere such as at home, work places. Coway now presents a new filter with innovative technology, called Nanotrap filter. Nanotrap filter not only eliminates harmful elements more than 99.9% such as viruses and bacteria but also enables tankless and direct water flow system that produces large volumes of potable drinking water. Made of Nanofiber material, Nanotrap filter produces high volume of clean and pure water even in low water pressure areas more conveniently than conventional UF filter systems.

COWAY NANOTRAP FILTER

Experience A New Lifestyle with Coway’s Technology

Nanotrap Filtration System

WHAT IS COWAY’S NANOTRAP FILTER? Water filtration appliances are one of the best ways to get clean drinking water. However, there is the trade-off between selectivity and permeability. For instance, a water filter which has a small pore size can remove the most hazardous materials but it will need a storage tank. A filter which has big pore size can produce a large amount of water but can only remove large particles like sand, dust, etc. Therefore, Coway has developed the innovative solution which combines high selectivity and permeability as an alternative of UF filter. Nanotrap filter is a direct water filtration system which is made of a special material called Nanofiber.

Direct Water Filtration System which can reduce microorganisms Pore size between Microfiltration (MF) membrane (0.1~20 ) and Ultrafiltratoin (UF) membrane (0.04~0.2 ) Comparative table of elimination between pore size and harmful materials (elements)

Sediment

Particles Product Type

Nanotrap

UF

UF

(Pore size 20 )

(Pore size 2 )

(Pore size 0.2 )

(Pore size 0.04 )

Sand, dust

Dust, Bacteria, Virus

Dust, Bacteria

Dust, Bacteria, Virus

Direct

Direct

Direct

Storage Tank

SEM

What is Nanofiber? Nanofiber is filter material which has a large surface area with high filtering capacity and low pressure drop. It has very high initial efficiencies but low durability. To make up for these disadvantages, we developed an electrospun nanofiber coating. It is a patented technology using electropositive nanoalumina fibers. It has big pore size (avg. 2 ) which enables high flow rate. It is effective to reduce bio-fouling materials including cell debris, DNA, RNA, virus, bacteria, metals, colloids, NOM, TOC and etc. * Virus (poliovirus1, Rotavirus, MS-2 coliphage and etc.) * Bacteria (Klebsiella terrigena and etc.)

Comparison of Filtration System (Nanotrap filter can cover the performance range from MF (microfiltration) to loose NF (nanofiltration)

5

COWAY NANOTRAP FILTER

Nanotrap filter is a perfect combination of cutting-edge technology and smart design

HYGIENE

EASY TO USE

HIGH ELIMINATION RATE OF VIRUSES, BACTERIA AND MICROORGANISMS

NO POWER CONSUMPTION

The Nanotrap filter uses an electromagnetic force that absorbs 99.99% of viruses and 99.9999% of bacteria onto the filter. It provides more hygienic and cleaner water than general UV and UF water filtration systems.

Nanoptrap filter is a direct flow filtration system that does not require an electric pump or UV light. The water filtration appliances with Nanotrap filters are easy to install and convenient to locate in at any preferable space. * The above is applied to ambient only model. The model which provides cold/hot function requires electricity.

SPACE-SAVING DIRECT WATER FILTRATION SYSTEM WITHOUT A STORAGE TANK

CYST

VIRUSES

BACTERIA

99.95% Eliminated

99.99% Eliminated

99.9999% Eliminated

HIGH EFFICIENCY

Direct water flow technology of Nanotrap filter produces large volume of clean and pure water by enabling high flow rate. Since it does not require a water storage tank, it allows water filtration appliances to have diversified and compact designs.

GOOD TASTE

ABUNDANT DRINKING WATER SUPPLY WITH HIGH QUALITY

HEALTHY AND TASTY WATER WITH MINERAL

Nanotrap filter provides high quality drinking water till the life time ends with high flow rate, even without pressure drop. Compared to a conventional filter such as UF filter which has 0.2 , the 10 times larger pore size (2 ) of Coway’s Nanotrap filter produces abundant drinking water with high flow rate – even still effective in low water pressure areas.

Nanotrap filter effectively eliminates odor yet does not affect the essential minerals that creates healthy and refreshing water.

Nanotrap filter

UF filter

7

COWAY NANOTRAP FILTER

Nanotrap is a Good Alternative To UF and UV filter

NANOTRAP PERFORMANCE SPECIFICATIONS Eliminates over 99. 9999% of Bacteria and over 99.99% of Viruses

Virus & bacteria reduction test

Microbiology reduction test

A competitive advantage to UV filters in the elimination of turbidity and electricity-free operation (Good case) Flow Rate Reduction (Low)

Conditions 6

MS-2 coliphage : 1.6 X 10 PFU/ml Flow rate : 1.2 LPM Nanotrap sample : UF filter, Nanotrap filter sample no. : 3 replication Results : Initial biological reduction

Conditions

Conditions

Feed pressure (dynamic) : 1.0 kgf/cm2 Flow rate at Press. Drop test : 2.0 LPM

Low

Low

Low

High

High

Bacteria Elimination (High)

High

High

Virus Elimination (High)

High

High

DHC(Dust Holding Capacity) Performance (High)

High

X

Turbidity Elimination (High)

High

X

No

Yes

Small

Big

Microorganisms

Form Factors

*Under the same conditions, the initial elimination rates of virus and bacteria are the same for conventional UV filters and Nanotrap filters. (Virus 99.99%, Bacteria 99.9999%)

The nanoalumina, the material for Nanotrap filter has been certified as safe Drinking Water Treatment Units

Feed pressure (closed) : 3 kgf/cm2 Test time : Press. Drop 2.5 kgf/cm2 Dust spec : ISO A4-coarse (0-180 um) Dust concenrtation : 400 ppm

Enhanced performance with higher water rate flow (1.5 times) & lower pressure drop (half) than conventional UF filters

Low

Microorganism Elimination (High)

Use of Electricity (No)

DHC and Turbidity test

UV Filter

Pressure Drop (Low)

Filter Size (Small)

Achieved 95% Ratio of Turbidity Elimination Criteria (Standard) of NSF/ANSI 53

Nanotrap Filter

General Performance

NSF International, the Public Health and Safety Company™, a not-for-profit, non-governmental organization, is the world leader in standards development, product certification, education, and risk-management for public health and safety. For 60 years, NSF has been committed to public health, safety and protection of the environment. While focusing on food, water, indoor air and the environment, NSF develops national standards, provides learning opportunities through its Center for Public Health Education, and provides third-party conformity assessment services while representing the interests of all stakeholders. The primary stakeholder groups include industry, the regulatory community and the public.

Flow rate and Pressure drop test

NSF/ANSI 42 Extraction Certification

FDA Certification

NSF certification confirmed the structure, material, quality and production facilities satisfied the standard of ANSI/NSF. NSF certification system includes examination of survey report on raw material, post censorship and consumer dissatisfaction survey. -ANSI/NSF 42: Drinking Water Treatment Unit –Aesthetic effect. -ANSI/NSF 53: Drinking Water Treatment Unit –Health effect.

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NANOTRAP FILTER SPECIFICATION Fiber dimension

Performance

Filter type Layer Pleating height Pleating No. Length Flow rate Pressure Drop DHC Dust Holding Capacity Turbidity

COWAY OVERVIEW

Nanotrap (R) / Nanotrap (PAC) Double / Single Layer 8.5 mm / 12 mm (0.33 inch / 0.47 inch) 17 EA / 23 EA 160 mm (6.3 inch) 150 L/hr 1 bar 0.50 kgf / 2 LPM (after going through filter) 100 g ( 8 sedi : 40 g / UF : 100 g) over 95 % ( NSF Standards 53) Nanotrap (R) : 12months (3,600 L) (951 gal) Nanotrap (PAC) : 6months (1,800 L) (475.5 gal)

Life time

NANOTRAP FILTER LINE-UP When used in conjunction with other filters you can enjoy a greater synergy. 2 column system

2 column system

Nanotrap (R) + Inno sense

Nanotrap (PAC) + Carbon

Bacteria, Virus, Taste & odors, Chlorine, Particulate Class 1, Turbidity

Bacteria, Virus, Taste & odors, Chlorine, Particulate Class 1, Turbidity, VOCs, Lead, Cysts, Asbestos, Mercury, Toxaphene, 2,4-D

Coway is going green to enrich human's daily lives. Being pure, clean, hygienic, fresh & safe are part of Coway's core values. Water

Air

Kitchen & Living

Bath

Pure

Clean

Healthy

Fresh

Water filtration appliances

Air purifiers

Juicers Vacuum cleaners

Electronic bidets Water softeners

We are the leader of our home market and the fastest growing home water and air appliance company with sales revenue of 1.5 billion dollars. And we have Asia's largest research and development facility dedicated to water and air products and technology - part of our commitment to being number one in air & water. Coway continues to prosper through economic hard times with the goal of being the number one name in the world of home wellness appliances.

GLOBAL NETWORK 5 column system 20um Sedi + 5um Sedi + Neo sense + Nanotrap (R) + Carbon Bacteria, Virus, Taste & odors , Chlorine, Particulate Class 1, Turbidity, VOCs, Lead, Cysts * The specified capacities are intended as guidelines only and may vary depending on the product volume flow and machine type.

Thanks to our commitment to quality, innovation and after-sales service, Coway has been the first name in home wellness appliances in Korea for the past 20 years. Today we're taking the Coway brand of wellness global. Our international network spans 5 continents with regional dealerships around the world and a logistics hub in Europe that serves over 80 countries. Already some of the leading global companies are Coway partners. And we are expanding further through a variety of sales channels. At the same time, we're laying the foundation for becoming the industry leader in industrial water treatment.

COMPETITORS’ COMPARISON Filter materials found in each company are different yet their performance in initially eliminating virus, bacteria meets NSF standards. Coway’s Nanotrap filter shows superiority in the flow rate and pressure drop and can be installed in relatively lower water pressure areas. Filter Element Materials Virus Elimination Performance (4-Log) Bacteria Elimination Performance (6-Log)

Company A

Company B

Coway

Carbon + Ag

UF

Nanofiber

Pass

Pass

Pass

ND

TNTC

ND

Microorganism Growth Test (after holding 48 hours) Flow Rate

54 L /hr

Pressure Drop

2.9 kgf/

1kgf/ 120 L /hr

52.2 L /hr 3.11kgf/

1kgf/ 120 L /hr

> 90-120 L /hr 1 kgf / < 0.4 kgf / 120 L/hr

* Results (or information) above acquired through Coway’s internal test.

6 SUBSIDIARIES_ USA, China, Japan, Thailand, Malaysia, Italia 1 BRANCH_ Chicago 1 LOGISTICS CENTER_ The Netherlands