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Liberty Flights XO e-liquids do not contain diacetyl or, acetyl propionyl and we don't use any artificial colours at all, in any of our XO e-liquids. We take product quality and safety very seriously. 

Liberty Flights uses high-grade quality ingredients. Our PG, VG and nicotine are all pharmaceutical grade and flavourings are food grade. Our e-liquids are Gas Chromatography Mass Spectrometry (GCMS) tested at an independent UKAS accredited laboratory to ensure that they are free from diacetyl (DA) and acetyl propionyl (AP). The accredited laboratory uses GMP (Good Manufacturing Practice). Good Manufacturing Practice is the standard required to conform to legislation covering pharmaceutical manufacture and testing.

The results of the e-liquids independent tested can be found where you see this symbol  on our e-liquid web pages. Due to the number of liquids available, this process is ongoing and as more results become available they will be published on the relevant product pages of our website.

When reviewing the tests (E-liquid Analysis Reports), for reference, 1 µg/ml equals 1 ppm and therefore, the safe limit of 20 µg/ml referenced previously equals 20 ppm for DA and AP and 8400 µg/ml equals 8400 ppm for Acetoin. The limits of detection for the methods used to conduct this testing are 2 ppm. It can therefore be said that any e-liquids showing a result of ‘none detected’ (ND) have levels below 2 ppm and are therefore within safe limits. Liberty Flights is pleased that the results reflect the thorough approach taken to e-liquid quality.

Diacetyl and Acetyle Propionyl, are used in food and beverage manufacturing for their buttery taste and aroma. Current available data does support that there is a risk associated with the inhalation of diacetyl and acetyl propionyl at high levels. The negative impact of these chemicals was first found in microwave popcorn workers who were exposed to these chemicals. Affected workers developed ‘popcorn lungs’, a type of inflammation and fibrosis of lung tissue, which leads to a permanent reduction in lung function.

Liberty Flights continue to invest in scientific development and testing to ensure that we produce e-liquid that is of the highest quality and safety.