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.
The Guinness World Records association recognizes the largest cat alive based on the separate categories of length and height, meaning there can technically be two cats that qualify as the world's largest house cat, though both titles have at various times been held by a single cat.