USDA products from animal sources are produced from starting material collected in United States Department of Agriculture (USDA) approved facilities, inspected to be free of disease and suitable for exportation. Custom and contract production, analysis and special package sizes can also be provided. Most products can be supplied in a wide range of purity and activity specifications. Collagenase Sampling Program: 100mg samples of up to 3 different lots of collagenase for evaluation in your own cell isolation systems. A minimum of 3 grams of each lot of collagenase will be placed on HOLD, reserved in your name.