They are identifying dairy farms that would be willing to take part in the testing of bulk milk to help flag up any spread of the virus across the country.
It has shown up in testing done on milk and yogurt, prompting at least two supermarket chains in Hong Kong to pull dairy products by Mengniu and Yili from store shelves, representatives from the companies told CNN Friday.
Cofounder Platz found that spray drying, a method of dehydration used to make powdered milk, produced a consistent particle, but the testing equipment was designed to make only a few grams per day.
Earlier this week, it introduced milk and fruit cup options for its Kids' Meal and is testing combo meals that offer chili, baked potatoes or a side salad instead of French fries, and "carb counter" meals.