Ametek Inc.acquired fluid analysis instrumentation and software company Spectro Scientific, whichoffers blended lubricant testing and analysis. Valvoline Inc.elected Carol H. Kruse to its board of directors effective Dec. 4. The U.S. Bankruptcy Court for the Southern District of New York granted Aegean Marine Petroleum Network Inc.access to capital to pay its suppliers, vendors, employees and others. The company filed for Chapter 11 bankruptcy on Nov. 6.