Fig. (1) Colony characteristics of Ralstonia solanacearum ‘NH-Av01’ on KM-TTC medium with the TTC from two sources. Colony growth as per OD at A₆₀₀ (a) and pigmentation of supernatant at A₅₀₀ (b) with the use of fresh, one-time thawed or three-times thawed stocks of TTC from HM and Sigma sources.