Ma, Jeffrey H., BCIT School of Health Sciences, Environmental Health, Helen Heacock, and Frederick Shaw. “DPD-Based Colorimetric Quantification of Free Available Chlorine (FAC) in Floatation Tank Conditions”. BCIT Environmental Public Health Journal (May 1, 2017). Accessed November 21, 2024. https://journals.bcit.ca/index.php/ehj/article/view/73.