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Even nicotine-free vapes can harm the lung - study
(www.aru.ac.uk)
just science related topics. please contribute
note: clickbait sources/headlines aren't liked generally. I've posted crap sources and later deleted or edit to improve after complaints. whoops, sry
Rule 1) Be kind.
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I don't screen everything, lrn2scroll
Those are standard strengths for freebase nicotine. Nicotine salt comes in different strengths. 50mg/ml and 35mg/ml are standard where I live in the US. Elfbars usually come in 40mg/ml.