They all come in 5% (50 mg/ml) of nicotine salt e-juice
Well Being Results Of Vaping Smoking And Tobacco Use Goniewicz et al41 analyzed the aerosol from 12 brands of e-cigarettes, a traditional cigarette, and a nicotine inhaler for toxic and carcinogenic compounds. The ranges of toxicants in the aerosol had been 1 to 2 orders of magnitude lower than in cigarette smoke however higher than…