Article Index › The Effects of Total Water Hardness on Coffee Extraction: An Evaluation Using Espresso, Chemex and Syphon Methods Image 1 of 1 The Effects of Total Water Hardness on Coffee Extraction: An Evaluation Using Espresso, Chemex and Syphon Methods $0.00 By Luz Stella Artajo MedinaIssue 87: May | June 2018 Quantity: Add To Cart Added! By Luz Stella Artajo MedinaIssue 87: May | June 2018