Slide The Air that We Breathe

You can rest assured that our flames burn cleanly. Those of you who are mainly concerned with air quality and safety are invited to get a complete insight in our flames - from the smaller wicks to the larger fireplaces.

There is growing focus and concern regarding air quality. From the greenhouse effect on a global scale to the air we breathe ourselves, whether it is in the workplace, in public areas, or in the home. From time to time, we experience bad air quality. The air we breathe is influenced by many different sources – of which ambient flames are just one.

The world has to tackle ever-increasing amounts of CO2 – which will require drastic measures over time. However, suggesting that the CO2 levels we produce ourselves is a significant danger to your indoor atmosphere is an exaggeration. We produce CO2 by breathing, when we use our car, our heating, building materials, transport… and everything that burns produces CO2. An average adult produces 7 - 9 tonnes of CO2 per year.

CO2 is easy to measure and is therefore often used as indicative of concerning air quality – and to find out if there is suitable air replacement in a room or area. You actually produce CO2 while reading this. Oxygen into the lungs - and some of the used air you exhale is CO2. Your plants on the windowsill produce CO2 at night when you sleep but consume it during the day. CO2 is a natural part of the air we breathe.


With TenderFlame, CO2 levels are always well within what is termed ‘health levels’*. This also applies to our large burners.

TenderFlame table lamps, lanterns, and table burners do not consume your air.

You are the best gauge when it comes to air quality. We can all sense if the air that we breathe deteriorates. If your living room is full of guests, it won’t take long before one of them suggests that you should open a window or the balcony door.

Cold, fresh air - new oxygen - and instantly, everything feels right. Again. Nature is smart - and our instincts prevent us from breathing bad air.

We are constantly working to remove health risks from emissions that could be harmful, (invisible microparticles from combustion and from CO) In short: when our fuel burns, the combustion is as complete* as it is possible to be. The test results we have compiled are based on burning in normal situations – to be relevant to how people use flames in their home.

About the tests:

Our tests have been carried out by established and recognized laboratories. They compare first and foremost TenderFlame with wax candles, t-candles, and larger cube lights.

Some names and terms:

*Complete (total) combustion will occur when access to oxygen is sufficient. Upon complete combustion, CO2 and water are formed.

CO2 is a natural part of the air and a central part of the carbon cycle. When substances that contain carbon burn, this gives CO2. (CO2 is produced when living organisms breathe)

Aerosols are microscopic drops – they appear as evaporated particles. CO - Carbon monoxide in air occurs primarily a result of incomplete combustion of carbon. A high proportion of CO is toxic and very dangerous. (This does not apply to our flame – due to our near 100% combustion)

After extensive testing **, our flames have shown values that are far below what is regarded as standard values for combustion in an ordinary home environment. At near-complete combustion, water vapour, CO2, negligible concentrations of aerosols and fine particles *** and CO **** are formed.

Relevant results/findings:
  • Lilly 8 burns 10 times cleaner than just one uncontained tea-light
  • One tea-light in an ordinary holder emits more soot than 50 x Lilly 8!
  • Our Lilly 10 burns 16 times cleaner than a tea light in a corresponding holder

* Scandinavian terminology for absolute combustion
 **Swedish Testing (RISE), MycoTeam Norway, TüV Rheinland Germany.
*** We have the best test results on fine particles where aerosols and soot are also included. **** Our burners only provide a 25-part recommended level - Up to 25ppm (parts per million) is acceptable for workplaces - 9 ppm at home.