The first test was interesting, but not reflective of real life. Animals are not submerging the entire amount of their bedding in liquid for 24 continuous hours. Also, although the total weight of each bedding sample in Test 1 was 1 pound, the volume of material varied widely. Subsequently, we needed to simulate the same volume of bedding as if it were in a henhouse or stall. Additionally, we needed to add a fixed amount of liquid like would happen if animals (chickens, horse, etc) were adding droppings or urine. Accordingly an absorbency test used was used similar to the methods used by the Department of Zoology at Oxford University to measure absorbency per unit volume. (Burns et al, 2005).
The second absorbency test began with a sample size of approximately 1 cubic foot of dry bedding was placed in a container and 8 cups of water were added. Next, the container was allowed to sit for 30 minutes then any excess water was poured off and measured. Pass criteria was that at least 90% of the liquid was absorbed by the bedding in 30 minutes.