Teqoya air purifiers efficiency: tested in labs

TEQOYA works with a lab expert in air quality to make sure about the performance of its products. Our purifiers use a physical phenomenon known as eliminating particles of all sizes: the ionization of the air. Here are the results of tests on clearance of particles by our devices.

Objectives of the tests:

  • Assess performance of TEQOYA ioniser in a room representative of real-life situations (most of the times air purifiers are assessed in testbed of smaller size than real-life rooms, and the electrical properties of their walls are not always representatives of materials used in buildings)
  • Measure both the particles removal performance, and the emission of potential toxic by-products some ionisers produce (ozone O3 and nitrogen oxides NOx)

Tests conditions:

  • TEQOYA ionisers were tested in a large room of 30m2 surface area (80m3 volume). Complementary tests were run in a smaller room of 13m2 surface area (32.5m3 volume) to evaluate the consistency of overall results.
  • Controlled emission of particles was done with cigarette smoke, because it is representative of the size and components of urban pollution (cars, industry, indoor sources), and because the amount of particles emitted can be closely controlled.
  • The measurement apparatus is state-of-the-art (granulometer Dekati/ELPI and ozone analyzer SA/O342M).

Summary of results

No ozone emission

No ozone emission was detected during the Teqoya ioniser operation: ozone density was similar and measured below 4.5 μg/cm3 with or without ioniser during experiments (except during cigarette combustion time).

Very significant particles removal performance, even in a large room.

On the chart below, a cigarette is burnt in the room. The measure of particles density is done at a roughly 2m distance from the ioniser. As soon as the ioniser is turned on, particles decay accelerates. In various test conditions, particles decay acceleration is 70% to 150% higher than reference tests without air purifier.

Very significant particles removal performance

In another test the ioniser was turned on before cigarette combustion. This test is closer to normal condition as the ioniser should never be turned off (its very low power consumption as well as the absence of noise allow continuous usewhich is recommended to insure continuous air cleansing). The chart below illustrates that ionised air decreases pollution peaks and accelerates air purification.

Very significant particles removal performance

Tests run in the smaller room (13m2 surface area) showed a similar efficiency and a faster particles decay than without ioniser.

Equal efficiency on a wide spectrum of particles size, even the most toxic ones (100 nanom. and below).

Equal efficiency on a wide spectrum of particles size

After less than 3 hours of operation, the background particles density (without controlled particles emission) is reduced by 72% in a large (30 m2 surface area) and weakly polluted room.

Background particles density strongly reduced

Previous to CERTAM tests, other measurements made confirmed the above results.

Tests performed in a Swiss public laboratory proved that toxic by-products levels are very low even very close to the ioniser's needles (1cm and 10cm). The difference between ozone level and nitrogen dioxide level with or without ioniser is of the same order as the measurement uncertainty (2 ppb), meaning that the variation is below the measurement apparatus accuracy.

CERTAM results confirm tests previously performed

Tests were performed by APAVE (private testing and measurement laboratory) in a french hospital to assess the impact of the ioniser on the density of 0.5μm particles. The particles density reduction with the ioniser is 70% higher than without ioniser.

APAVE tests in operating room show performances