"We had also reported the benefit of using a copper-based device, contrived by us, which was as effective as the pot but at a fraction of the cost." [12] [12]

"We had also reported the benefit of using a copper-based device, contrived by us, which was as effective as the pot but at a fraction of the cost." [12] [12] https://www.ncbi.nlm.nih.gov/pubmed/19230946/ https://www.ncbi.nlm.nih.gov/pubmed/19230946/ (Device spoiler: Water in glass bottles with copper coils.)