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.
Largest living cat. The largest living cat is Hercules, an adult male liger (lion x tigress hybrid) currently housed at Myrtle Beach Safari, a wildlife reserve in South Carolina, USA. In total length, he measures 3.33 m (131 in), stands 1.25 m (49 in) at the shoulder, and weighs 418.2 kg (922 lb).