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Validation of a High Flow Rate Puff Topography System Designed for Measurement of Sub-Ohm, Third Generation Electronic Nicotine Delivery Systems

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Listed:
  • Evan Floyd

    (Department of Occupational and Environmental Health, Hudson College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA)

  • Toluwanimi Oni

    (Department of Occupational and Environmental Health, Hudson College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA)

  • Changjie Cai

    (Department of Occupational and Environmental Health, Hudson College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA)

  • Bilal Rehman

    (University of Oklahoma Health Sciences Center, University of Oklahoma College of Medicine, Oklahoma City, OK 73104, USA)

  • Jooyeon Hwang

    (Department of Occupational and Environmental Health, Hudson College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA)

  • Tyler Watson

    (Department of Occupational and Environmental Health, Hudson College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA)

Abstract

There are few known puff topography devices designed solely for gathering electronic cigarette puff topography information, and none made for high-powered sub-ohm devices. Ten replicate Bernoulli flow cells were designed and 3D printed. The relationship between square root of pressure difference and flow rate was determined across 0–70 L/min. One representative flow cell was used to estimate puff volume and flow rate under six simulated puffing regimes (0.710 L, 2.000 L and 3.000 L, at low and high flow rates) to determine the system’s accuracy and utility of using dual pressure sensors for flow measurement. The relationship between flow rate and square root of pressure differential for the ten replicate cells was best fit with a quadratic model (R 2 = 0.9991, p < 0.0001). The higher-pressure sensor was accurate at both low and high flow rates for 0.71 L (102% and 111% respectively), 2.00 L (96% and 103% respectively), and 3.00 L (100.1% and 107% respectively) but the lower-pressure sensor provided no utility, underpredicting volume and flow. This puff topography system generates very little resistance to flow, easily fits between user’s atomizer and mouthpiece, and is calibrated to measure flows up to 70 L/min.

Suggested Citation

  • Evan Floyd & Toluwanimi Oni & Changjie Cai & Bilal Rehman & Jooyeon Hwang & Tyler Watson, 2022. "Validation of a High Flow Rate Puff Topography System Designed for Measurement of Sub-Ohm, Third Generation Electronic Nicotine Delivery Systems," IJERPH, MDPI, vol. 19(13), pages 1-12, June.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:13:p:7989-:d:851685
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    References listed on IDEAS

    as
    1. Monique Williams & Prue Talbot, 2019. "Design Features in Multiple Generations of Electronic Cigarette Atomizers," IJERPH, MDPI, vol. 16(16), pages 1-15, August.
    2. Evan Floyd & Sara Greenlee & Toluwanimi Oni & Balaji Sadhasivam & Lurdes Queimado, 2021. "The Effect of Flow Rate on a Third-Generation Sub-Ohm Tank Electronic Nicotine Delivery System—Comparison of CORESTA Flow Rates to More Realistic Flow Rates," IJERPH, MDPI, vol. 18(14), pages 1-13, July.
    3. Carmela Protano & Pasquale Avino & Maurizio Manigrasso & Valerio Vivaldi & Franco Perna & Federica Valeriani & Matteo Vitali, 2018. "Environmental Electronic Vape Exposure from Four Different Generations of Electronic Cigarettes: Airborne Particulate Matter Levels," IJERPH, MDPI, vol. 15(10), pages 1-10, October.
    4. Konstantinos E. Farsalinos & Giorgio Romagna & Dimitris Tsiapras & Stamatis Kyrzopoulos & Vassilis Voudris, 2013. "Evaluation of Electronic Cigarette Use (Vaping) Topography and Estimation of Liquid Consumption: Implications for Research Protocol Standards Definition and for Public Health Authorities’ Regulation," IJERPH, MDPI, vol. 10(6), pages 1-15, June.
    5. Rachel Boykan & Maciej L. Goniewicz & Catherine R. Messina, 2019. "Evidence of Nicotine Dependence in Adolescents Who Use Juul and Similar Pod Devices," IJERPH, MDPI, vol. 16(12), pages 1-6, June.
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