Berkshire Partners, a Boston-based investment firm, completed the acquisition of a stake in FoodChain ID, a provider of food safety, testing and sustainability, from Paine Schwartz Partners, a private equity firm. Financial terms were not disclosed. "We are excited to collaborate with Berkshire Partners through the next chapter of our growth. The Berkshire team understands our business well and shares our vision for the future. My team and I look forward to continuing to support our customers with an expanding suite of global food safety and quality solutions," Brad Riemenapp, FoodChain ID CEO.