Firefighting Gear Shelf Life Of Foam Products

It depends on what type of foam concentrate you have for firefighting gear shelf life of foam products as typically the it will vary from product to product. Concentrates of a protein type have a shelf life from 7 to 10 years. Concentrates of a synthetic type, which are AFFF, Arc type AFFF, high expansion and "class A" concentrates will have a shelf life of 20 to 25 years.

The Arc concentrates will have a gel like nature and often be mistaken for "old" but it is the polysaccharide in it that gives it this consistency to work on polar solvent/water soluble liquids.