$367 per analysis
Moisture Isotherms can be performed on most food ingredients and finished products.
Limit of Detection:
Sample Size Requirements:
Salt solution chambers: (%RH) – 0,11,22,33,44,54,64,75, and 83
Graph depicting equilibrium moisture content as a function of relative humidity
Turnaround time is project-dependent based on when equilibrium is reached.
Is rush testing available?
The lab weighs a small amount of sample (as-is) and places it in one of nine jars. Each jar contains a salt solution which generates a specific relative humidity. The nine jars have the following % Relative Humidity (%RH): 0/12/24/33/45/54/67/77/86. Intermediate points are difficult to obtain as there are not any safe salt solutions that represent relative humidity (RH). The sample is then left for anywhere from 3-6 weeks until it has equilibrated with the RH of the salt solution. Once it has equilibrated, the sample is evaluated for texture, appearance, and any other pertinent physical characteristics at each of the 9 %RH. The relative humidity at which the sample is no longer acceptable is noted.
The moisture isotherm data enables us to determine at what relative humidity (critical moisture) your product will no longer be acceptable and tells us the tolerance of a food product or ingredient.
Pricing includes water activity and moisture, required for this test.
If you have questions about our testing services, please contact us at +1 (800) 245-5615.