AllerSnap is a quick and easy way to accurately verify the cleanliness of surfaces to help ensure product quality by detecting protein residues left behind after cleaning. Simply swab a surface, activate the device to release the reagent, incubate, and if protein residue is present the reagent will turn purple. The color change provides a qualitative and semi-quantitative result of the protein levels on the surface. The more protein present, the quicker the color change to purple and the darker the color. AllerSnap quickly validates the hygiene of a surface, allowing immediate corrective action to be taken if necessary. Learn more about AllerSnap here! http://www.hygiena.com/allersnap-food-and-beverage.html