39/51 vape juice

The combination of the numbers "39/51" refers to a widely cited research data in the e-cigarette field, which is related to a chemical substance called diacetyl.

The full meaning of this data is: In a 2015 study conducted by Harvard University, scientists tested 51 different flavors of e-cigarette oil, and found diacetyl in 39 of them.

What is diacetyl? It is an additive commonly used in food, which can bring a buttery, creamy aroma and taste. Many flavors of e-cigarette oil, such as cream, egg and dairy, or sweet treats, may use it.

What are the main concerns? Although consuming diacetyl is safe, the study is concerned about the risks of inhaling it. This stems from an earlier incident called "Popcorn Lung": At that time, factory workers developed serious lung diseases after long-term inhalation of the diacetyl vapor used for popcorn flavoring.

How is the situation now? This was a study conducted over a decade ago. Since then, many e-cigarette oil manufacturers have voluntarily adjusted their formulas and no longer use diacetyl. Meanwhile, regions like the UK have explicitly prohibited the addition of this component to e-cigarette oil. However, the United States currently does not have a similar federal ban.

So, "39/51" is more of a historical reminder, emphasizing the importance of paying attention to the components of e-cigarette oil and choosing reputable brands. If you have doubts about the safety of a specific e-cigarette oil, you can check its ingredient list or directly ask the manufacturer if it has undergone third-party testing.