The project has been published in Elsevier's peer reviewed journal HardwareX Modified full-face snorkel mask as COVID-19 personal protective equipment: Quantitative results The project includes the OceanReef filter adapter .stl file and various multimedia files showing the assembly of the modified full-face snorkel mask and results.

Reference:

Modified full-face snorkel mask as COVID-19 personal protective equipment: Quantitative results.
Nicholson K, Henke-Adams A, Henke DM, Kravitz AV, Gay HA.
HardwareX. 2021 Apr;9:e00185. doi: 10.1016/j.ohx.2021.e00185. Epub 2021 Feb 25.
PMID: 33655089