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.
Biggest Cat on Earth â Siberian Tiger / The Amur Tiger. The Siberian Tiger, Also Called The Amur Tiger Is The Largest Cat On Earth. Its 360 Kg (800 lb) Frame Far Outweighs Its Closest Competitor, The African Lion Which Weighs Around 250 Kg (550 lbs). They Live in The Vast Forests And Mountain Ranges Of Russia And China.