Other Business Crystal Lake, IL – Firefighters; Sprinkler system control potentially dangerous fire at chemical supply company April 11, 2018 viking210 A fire last Friday night inside a Crystal Lake chemical supply company caused about $35,000 in damage and required a large emergency response. Crystal Lake firefighters responded to an activated fire alarm about 6:50 p.m. at the Rita Corporation, 850 S. Route 31 in Crystal Lake, according to a news release from the Crystal Lake Fire Rescue Department. When crews arrived, they noticed smoke inside the building, but the building’s sprinkler system helped control the spread of any flames. Firefighters extinguished the blaze. It was limited to one office and its contents, the release stated. The fire’s cause was under investigation as of Saturday morning. No one was injured in the incident. Crews from Algonquin-Lake in the Hills, McHenry, Cary and Nunda also responded to assist Crystal Lake firefighters in fighting the fire and investigating its cause. An individual from the Illinois State Fire Marshal’s Office also responded to investigate.