Here you may find answers to frequently asked questions (FAQs) about the ePurifier.

  1. How does the ePurifier work?

The core of the ePurifier is the (negative-)ion ionizer. This ionizer generates and emits ions (from the emitter brush). When these ions are emitted into the surrounding air they get attached to airborne particles. These airborne particles then acquire a negative charge, and so become attracted to nearby places where there may be a positive charge (a wall, desk, your shirt, etc.) instead of getting breathed in.

  1. Is the ePurifier intended to clean the air of airborne viruses?

The ePurifier is not designed to clear the air of airborne viruses, and so no tests have yet been made to see the ePurifier’s efficacy against airborne viruses.

  1. What kind of tests has the ePurifier passed?

The ePurifier has been tested by renowned third party testing & certification companies (such as SGS) for standard safety requirements, such as electro-magnetic interference and battery safety. The ePurifier also passes tests for ozone safety.
Regarding air purification and negative ion emission performance, our internal tests show that the ePurifier generates around 20 million negative ions/cm3. SGS's tests have also shown that, in comparison to the results found in the HK Consumer Council report on wearable air purifiers, ePurifier is #1. A page regarding such details will be available soon.

  1. What is Aura mode?

The ePurifier can operate in two modes: a normal (default) mode and Aura mode. When in operation, pressing the on/off button on the ePurifier activates Aura mode. In this mode, the ionizer operates at maximum power (at the cost of energy efficiency). Whenever Aura mode is activated, it is only activated for five minutes and the ePurifier returns to normal mode automatically.

  1. How long does the ePurifier last on a single charge?

Assuming a new battery and normal operation, ePurifier should last up to 30 hours on a single, full charge.

  1. Who should not use ePurifier?

People who have a pacemaker or other health-critical electronic devices should ask their doctor whether or not the ePurifier is OK to use. Babies and toddlers should refrain from using the ePurifier due to the possible choking hazard of the lanyard, and the possibility that they play with the negative ion emitter. So long as your child understands how to use the ePurifier properly, it should be no problem.

  1. Does the ePurifier generate ozone?

The ePurifier generates small amounts of ozone during operation, but only a very small amount and within the limits of most internationally recognised standards, such as the NIOSH exposure limit of 0.1 ppm (parts per million) or IEC's exposure limit of 0.05 ppm.

  1. How best to use the ePurifier?

The ePurifier is designed to be hung around your neck during operation. The conductive lanyard attached to the ePurifier will help with attracting the ions, which helps with the purification performance of PM2.5. The optimal distance between your nose and the ePurifier is around 20-30cm. For the average adult this is around the middle of your chest.

  1. Will the ePurifier interfere with electronic equipment?

The ePurifier satisfies European EMC standard (EN 55014), and so should not interfere with most if not all of your electronic equipment.

  1. Is it OK to use an ePurifier on the plane?

Since ePurifier satisfies the European EMC standard, it should not be a source of electromagnetic interference on planes and should be allowed.