pH Substrate 7 S 7 S 6.75 S 7.2 S 6.75 S 6.8 S 7 S 7.2 S 7 S 6.5 S 6.8 S 6.8 S 7 S 6.8 S 7.5 M 7.5 M 7.8 M 7.5 M 7 M 7.25 M 7.25 M 7.5 L 7.5 L 7.75 L 8 L 7.75 L 7.75 L 8 L 8 L 8 L 7 L 8 L 8 L 8 L 8 L 7.5 L 7.75 L 8 L 7.75 L 7.5 L 7.85 L 7.7 L 7.9 L 7.3 L 7.6 L 8.1 L 7.8 L 7.3 L 7.5 L 8 L 8 L 7 M 7 M 7.5 M 7.15 M 7.15 M 7.5 M 7 S 7 S 6.5 S 7 S 6.8 S 7.3 S 7 S 7 S 7 S 6.8 S 6.8 S 6.8 S 7.5 S 7.5 L 7.5 L 8 L 7.5 L 8 L 8 L 7.5 L 8 L 8 L 8 L 7.5 L 7.5 L 7.4 L 7.5 L 7 L 7 L 7.5 L 7 S 7 S 7 S 7 S 7 S 6.8 S 6.5 S 7 S 7 S 7 S 7 S 7 S 6.7 S 6.5 S 7.2 S 7.5 S 7.5 S 8 L 7.5 L 7.9 L 8 L 8 L 7.5 L 7.5 L 8.2 L 7 M 7 M 7.5 M 7 M 7 S 7 S 7 S 7 S 6.9 S 7 S 7 S 7 S 7 S 6.7 S 7.4 L 7.6 L 6.4 L 6.8 L 7.9 L 7.7 L 7.7 M 7.3 L 7 S 7 S 7 S 7 M 7.2 S 7 M 7 M 7.5 M 7.8 L 7.7 L 7.8 L 7.7 L 7.7 L 7.7 L 7.2 M 7 S 7 M 6.8 S 7.3 M 7.1 M 8 L 8 L 7.5 L 7.75 L 7.75 L 7.5 L 7 S 6.5 S 7 S 7 S 7.1 S 7.5 L 7.6 L 7.6 L 6.8 S 7.2 S 6.8 S 6.5 S