Water activity

DB Lab has equipment for determination of water activity in all types of small samples.

Microorganisms need free water for growth. Water activity (AW) is a measure for the amount of water that is not bound to e.g. salts and thus available for microorganisms, enzymes and chemicals. The water activity of a sample thus has a great influence on its stability.

Most bacteria cannot grow or survive in preserved products med water activity below 0.75 and most moulds cannot grow below 0.65. 


Stine Tryggedsson

Stine Tryggedsson

Quality assurance and microbiological analyses

MSc in biomedicine