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.
What is the biggest Donut ever made. Answers. Donut King dessert franchise in Australia made a 6 meter wide BIG Donut, the world's biggest doughnut made. The world's largest donut was an apple fritter that weighed 5,000 pounds and had a 95 foot diameter.