Figure 2. Effects of a 2 h phage cocktail treatment on K. pneumoniae CAV1016 grown on 316 L stainless steel coupons. A) Viable plate counts of planktonic-associated CAV1016 after 2 h phage cocktail treatments at 37 °C. Untreated controls are represented by the black bar. Phage cocktail 1(∼109 PFU/mL) (PC1, gray bar) and phage cocktail 2 (∼107 PFU/mL) (PC2, light gray bar). Values are log-normalized means ± SEM (n = 9). Single and double asterisks represent significant differences between control and the respective treatments (p < 0.05) as determined by Student's t-test. B) Viable plate counts of biofilm-associated CAV1016 after 2 h phage cocktail treatments at 37 °C. Untreated controls are represented by the dark green bar. Phage cocktail 1 (PC1, green bar) phage cocktail 2 (PC2, light green bar). Values are log-normalized means ± SEM (n = 9). Single and double asterisks represent significant differences between control and the respective treatments (p < 0.05) as determined by Student's t-test.