Purilight Portable UVC Water Sterilizer

Product Description

Purilight Portable UVC Water Sterilizer utilizes UVC radiation at 270 nm to destruct the molecular bonds that bind the DNA of viruses and bacteria with 99.9 % of bacterial removal efficiency. This product is a commercially available product developed by a nonprofit organization in South Korea called Sharelight. The product works in places with both electric power and no electric power as it can be operated with hand rotation or by DC 5V (USB micro 5pin).

Target SDGs

SDG 6: Clean Water and Sanitation

SDG 3: Good Health and Well-Being

Market Suggested Retail Price

$75.00

Market Suggested Retail Price (Secondary Currency)

90,000 KRW

Target Users (Target Impact Group)

Household

Distributors / Implementing Organizations

As of 2020, the Purilight Portable UVC Water Sterilization unit has been implemented in 2 countries through KOICA projects.

Manufacturing/Building Method

The product is designed and manufactured in South Korea by an NGO called Sharelight.

Intellectural Property Type

Patent

User Provision Model

One can obtain this product by directly contacting the manufacturer or also in an online Indonesian Market called Tokopedia.

Distributions to Date Status

As of 2020, 500 have been distributed throughout Tanzania and Nepal, where 300 units were distributed in Tanzania and 200 in Nepal. Interview with Manufacturer

Deactivation mechanism

UVC radiation (270 nm)

Energy source

It can either be operated by DC 5V (USB micro 5-pin) or hand-cranked

Manufacturer-specified water treatment rate (L/hr)

1 L/min

Bacteria reduction

Log 2.5-4

Virus reduction

Log 5

Protozoa reduction

Unknown

Heavy metals and/or arsenic reduction

Maximum recommended influent turbidity level (NTU)

Recommended to use in visibly clear water

Effluent turbidity levels (NTU)

Unknown

Safe water storage capacity (L)

2 L

Design Specifications

Purilight is a small, portable, chamber type disinfection System which is used to effectively inactivates aerosolized viruses, bacteria, and fungi with a UVC LED irradiation. The capacity of the chamber is 2L and can disinfect the germs within 90 seconds of operation. Design specifications for this product are as follows: Model: SLUV-02 Size: 177 X 176 X 253mm Weight: 1.6kg Material: Main Body PC / Container PC, ABS Input: DC 5V(USB micro 5pin) or hand-cranked Power consumption(W): Sterilization mode 2.3W, Lighting mode 2W Design specifications for this product are as follows: Model: SLUV-02 Size: 177 X 176 X 253mm Weight: 1.6kg Material: Main Body PC / Container PC, ABS Input: DC 5V(USB micro 5pin) or hand-cranked Power consumption(W): Sterilization mode 2.3W, Lighting mode 2W

Product Schematics

Technical Support

As of 2020, the technical support is provided directly by manufacturers but later plans to set up local support in Asia and Africa. Interview with manufacturer.

Replacement Components

None

Lifecycle

Over 5 years for the Purilight device and 3000 hrs for UVC LED lights. Interview with manufacturer

Manufacturer Specified Performance Parameters

This filter was designed to reduce bacteria by 99.9% and virus by 99.999%. Designer specified performance targets include lightweight, durable, portable, manual power generation, and chemical-free water sterilization. It was also designed to have dual functionality by utilizing it as a lamp for light.

Vetted Performance Status

Testing performed by KCL (Korean Confirmatory Laboratories) for a microbiological test determined a reduction of bacteria by log 2.5 to 4 and virus by log 5.

Safety

This product has been tested through various organizations, including National Radio Research Agency- KC for EMI/EMC, Standard Engineering -CE for EMI/EMC and RoHS, and KCL (Korean Confirmatory Laboratories) Interview with manufacturer

Complementary Technical Systems

Power source: DC 5V (USB micro 5pin)

Academic Research and References

Bintsis, T. et al., 2000, Existing and potential applications of ultraviolet light in the food industry–a critical review, Journal of the Science of Food and Agriculture, 80(6), pp.637-645.

Kim, D.K. and Kang, D.H., 2018, UVC LED irradiation effectively inactivates aerosolized viruses, bacteria, and fungi in a chamber-type air disinfection system, Applied and environmental microbiology, 84(17)

“Goal 6.” n.d. Sdgs.Un.Org. https://sdgs.un.org/goals/goal6

“???? ?????.” n.d. Share-Light.Co.Kr. https://www.share-light.co.kr/page/product2_en

N.d. Tokopedia.Com. https://www.tokopedia.com/ptssa/purilight-sharelight-alat-sterilizer

Kim, Do-Kyun, and Dong-Hyun Kang. 2018. “UVC LED Irradiation Effectively Inactivates Aerosolized Viruses, Bacteria, and Fungi in a Chamber-Type Air Disinfection System.” Applied and Environmental Microbiology 84 (17). https://journals.asm.org/doi/10.1128/aem.00944-18

“Legal Certification & Inspection.” n.d. Kcl.Re.Kr. https://www.kcl.re.kr/site/homepage/menu/viewMenu?menuid=002001002001

Compliance with regulations

Unknown

Evaluation methods

The product is evaluated for the removal of bacteria and viruses in a certified third-party laboratory.

Other Information

Tutorial video News coverage