“…pH ¼ 9) (Bielefeldt et al, 2013;Mittelman et al, 2015). An alternative perspective however is that a step-wise reaction occurs, as shown in Reaction 8, whereby silver solid particles bond with oxygen in the water or on the ceramic surface, forming AgO or Ag 2 O, which subsequently reacts with hydrogen and dissociates into dissolved silver ions and water (Bielefeldt et al, 2013;Fauss et al, 2014;Hong et al, 1995;Liu & Hurt, 2010;Nguyen, 2014). Consequently, Mittelman et al (2015), reported silver release to decrease from 0.6 mg/L to 0.1 mg/L and then 0.008 mg/L as pH increased from 5 to 7 to 9 sequentially (Mittelman et al, 2015), demonstrating a clear relationship.…”