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.
Worldâs Most Expensive Vodka Bottle Stolen, See Itâs Worth A Russo-Baltique vodka said to be the most expensive in the world has been stolen from a bar in Copenhagen. Danish police are investigating the theft of a bottle of vodka claimed to be the worldâs most expensive at $1.3m (Â£960,000/N467,350,000).