It is defined as the vapor pressure of water divided by that of pure water at the same temperature; therefore, pure distilled water has a water activity of exactly one.
Therefore, pure distilled water has a water activity of exactly one. It is defined as the vapor pressure of water divided by that of pure water at the same temperature.
It is defined as the vapor pressure of water divided by that of pure water at the same temperature. Therefore, pure distilled water has a water activity of exactly one.
It is defined as the vapor pressure of water divided by that of pure water at the same temperature. Therefore, pure distilled water has a water activity of exactly one.