Updated: Mar 3
With more ultraviolet sterilisers and lamps being widely available to consumers and many countries worldwide using ultraviolet (UV-C) light to fight COVID-19, it is very important to know what are the necessary features to look out for when choosing a safe and effective ultraviolet steriliser to use on your premises.
Feature 1 - Safety sensors to prevent UV radiation and exposure
Many ultraviolet sterilisers and lamps marketed for household use do not have any motion safety sensors to cut off the light when there are people in the area ie. table desk lamps, household UV lamps with no motion sensors, ultraviolet handheld portable wands, ultraviolet disinfection boxes, etc.
An article from NEA has mentioned that many household use ultraviolet sterilisers sold on online platforms like Qoo10, Shopee, Alibaba, EzBuy, Lazada etc. do not have the appropriate safety features in place to ensure safety of the user and the surrounding people around the steriliser, causing exposure to UV radiation.
Exposure to UVC radiation due to inappropriate use or unsafe sterilisers can cause serious eye or skin injuries.
The National Environment Agency (NEA) advises households not to use disinfection sterilisers based on UVC radiation technology. Many such sterilisers marketed for home use lack safety features that protect users from unintended or accidental exposure to UV radiation.
Feature 2 - Internal surfaces of the steriliser must be reflective for effective sterilisation
For effective sterilisation, the internal surfaces must be made of a reflective surface ie. aluminum, metal or stainless steel material so as to properly reflect all ultraviolet light onto the items being placed inside the steriliser.
If the internal surfaces are non-reflective ie. plastic / cloth like the examples below, it is ineffective in sterilising all the items placed inside the steriliser.