Figure 5
From: Farm use of calcium hydroxide as an effective barrier against pathogens
Detection of carbonation of Ca(OH)2 using a pH indicator. SLBGs containing Ca(OH)2 or CaCO3 (left) or powder consisting of Ca(OH)2 or CaCO3 (left) (right) were sprayed with the pH indicator we developed (Uwai et al., manuscript in preparation). Granules and powder containing Ca(OH)2 instantly turned blue from red due to their strong alkalinity, but granules and powder containing CaCO3 remained red (Supplementary Movie 1).
