Standard buffer solutions for pH-meter calibration. pH-meters measure the voltage. developed between two electrodes. immersed in the sample and. compare that value to a calibration. derived from the same electrode. pair and known standards.
Collinsville, Illinois. Built in 1949 in this former catsup company town, the World's Largest Catsup Bottle celebrated its 65th anniversary in 2014. It's the water tower at the old Brooks Catsup Plant and headquarters.
comment () A cat in Reno has broken the Guinness world record for world's longest domestic cat. The Reno Gazette-Journal reported that a 5-year-old Maine Coon named Stewie was certified as the new record holder after measuring 48.5 inches from the tip of his nose to the tip of his tail bone.