The Fork Food Lab, which was scheduled to close Monday after two years providing commercial kitchen space for Portland food startups, has new life. On Tuesday, the Yarmouth-based Sustainability Lab announced it has entered into a partnership with the Portland enterprise to keep it open. The Fork Food Lab has 25 member businesses, representing more than $3 million in sales, according to the Tuesday announcement. In late July, the lab’s parent company, Pilotworks, said the Portland facility — as well as another one in Providence, Rhode Island — would have to close “due to the structural layout and market dynamics in this location.” [From fight club to food club in Portland] Bill Seretta, president of The Sustainability Lab, said Tuesday he aims to raise $250,000 to eliminate the Portland lab’s debt, build the membership to a “self-sustaining” 45 rent-paying businesses and expand training programs. “Fork Food Lab is a critical part of the infrastructure for small business creation in Greater Portland,” he said in a statement.