Fig. 2
From: Water bath is more efficient than hot air oven at thermal inactivation of coronavirus
Effect of sample height, volume, and container diameter on duration to 56 °C. (a) Conical tubes filled with 10 mL pure water sample in each were precooled to 8 ℃ and placed in a water bath preheated to 56 ℃. The sample height matched the level of heating water, or kept higher or lower than the level of heating water in scales respectively. The height difference was expressed as Δ. The time lapse of the sample to 56 ℃ was presented as mean ± SD from 3 independent experiments. (b) Conical tubes were filled with pure water sample in different volume were precooled to 8 ℃ and placed in water bath and air oven preheated to 56 ℃. The time lapse of water sample to 56 ℃ was shown. (c) Containers with indicated diameter were filled with 40 mL of pure water sample and precooled to 8 ℃. After being placed in water bath or air oven preheated to 56 ℃, the time lapse of water sample to 56 ℃ was shown. Data in (b) and (c) were representative of 3 independent experiments and analyzed by linear regression