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. Author manuscript; available in PMC: 2018 May 7.
Published in final edited form as: Tob Regul Sci. 2017 Jul 1;3(3):347–357. doi: 10.18001/TRS.3.3.10

Figure 1.

Figure 1

Comparison of 0 mg E-cigarette Refill Fluids and Identification of Counterfeit Products

Note.

(A–D) Three-dimensional HPLC chromatograms showing presence or absence of nicotine in e-cigarette products labeled 0 mg of nicotine. X axis = time (minutes), Y-axis = absorbance (mAU), and Z-axis = wavelength (nm).

(E–F) These are the color variations between identical refill fluids for Bright Tobacco Nigeria versus USA (E) and MB flavors (F).

(G–J) Differences in packaging between Watermelon from Nigeria (G) without a QR code (I) and USA (H) with a QR code for authentication (J).

(K –L) Warning labels and certification logos on Bright Tobacco refill fluid boxes purchased in the USA (K) without the SGS logo (red box) and in Nigeria (L) with the SGS logo.

The ecotoxic symbol (M) was present on only the counterfeit LiQua refill fluids.