The Master Pack is just like the Express Pack – only turbocharged with more of all the same top quality cleaning utensils. The industrial strength SteramineĆ keeps germs and bacteria from occurring by sanitizing, disinfecting, and deodorizing. Steramine /-E is a 200ppm solution used by daycares and schools, culinary companies, hospitals, industrial plants, hospitality industries and for general sanitization. STERAMINE Ć will maintain the superior cleanliness of the Ozark River Portable Sinks systems for years to come. The Master Pack has 10 Express Packs included.