Purilight Portable UVC Water Sterilizer
Purilight Portable UVC is a water sterilizer device.
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).
Myanmar, Tanzania, and Nepal
As of 2020, the Purilight Portable UVC Water Sterilization unit has been implemented in 2 countries through KOICA projects.
As of 2020, the market price for Purilight in S.Korea is 75 USD (90,000 KRW) Converted September 2020, Interview with manufacturer
Goal 6: Clean water and sanitation
The target users include individuals or households that lack access to clean drinking water and electricity.
The product is designed and manufactured in South Korea by an NGO called Sharelight.
Patented under Korean Intellectual Property rights.
One can obtain this product by directly contacting the manufacturer or also in an online Indonesian Market called Tokopedia.
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
Primary water purification method
Manufacturer-specified water treatment rate, measured in liters per hour
Laboratory-evaluated log scale removal rate of bacteria
Laboratory-evaluated log scale removal rate of viruses
Laboratory-evaluated log scale removal rate of protozoa
Reduction levels of heavy metals and/or arsenic through this treatment system
Manufacturer-specified maximum level of inlet turbidity (NTU)
Range or value of outlet turbidity levels (NTU)
Is there safe water storage integrated into this product?
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
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
Over 5 years for the Purilight device and 3000 hrs for UVC LED lights.Interview with manufacturer
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.
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.
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
The designer suggests reading the user guide carefully before using it as a UVC light. If not dealt with carefully, this product can be harmful to the human body or human eyes.
Power source: DC 5V (USB micro 5pin)
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).
The product is evaluated for the removal of bacteria and viruses in a certified third-party laboratory.
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