If a product is kept below a certain water activity then mold growth is inhibited.
Water activity meter for food.
Water activity aw or erh equilibrated relative humidity is a measure of the free water in a product water which is not bound into the product in any way and which is available for the growth of moulds and the proliferation of bacteria.
These water activity meters are used around the world in many industries from food and pharmaceuticals to oil and chemicals.
Water activity can have an influence on a products shelf life odour colour flavour or texture.
The water activity a w concept has served the microbiologist and food technologist for decades.
Visit the cgoldenwall store water activity or aw indicates the free water content when food is stable measures the possibility of microbial proliferation.
The water activity instruments can be used in water activity measurement for process and quality control on the production line or for laboratory analysis and product development.
The water activity level of 0 85 is used as a point of definition for determining whether a low acid canned food or an acidified food is covered by the regulations.
To make a measurement flip back the sensor cover and fit the pawkit over a standard aqualab sample cup.
One can therefore not predict even the direction of the change of water activity with temperature since it depends on how temperature affects the factors that control water activity in the food.
As a potential energy measurement it is a driving force for water movement from regions of high water activity to regions of low water activity.
Food designers use water activity to formulate shelf stable food.
With a limited 0 02 a w accuracy the pawkit should only be used to verify readings or where a higher accuracy reading is not critical.
Water activity values can also help limit moisture migration within a food product made with different ingredients.
Food formulators use water activity to predict how much moisture migration will affect their product so that to choose suitable package and storage method to reduce the usage of antiseptics.
Use the aqualab 4te water activity meter to get lab quality measurements at the line receiving dock processing plant storage facility anywhere you need to test and verify the safety and quality of your products and ingredients.
This results in a longer shelf life.
It is the most commonly used criterion for safety and quality.
Water activity s usefulness as a quality and safety measurement was suggested when it became evident moisture content could not adequately account for microbial growth fluctuations.
Aqualab water activity meters are fast and reliable in every single aspect.
