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 largest barrel size? Is it a hogshead? âJason, via the Internet. Actually, the world's largest wine barrel is considered to be the Heidelberg Tun, contained within the cellars of Germany's Heidelberg Castle. It was built in 1751 from 130 oak trees by Prince Elector Karl Theodor, and it stands 7 meters high, 8 1/2 meters wide, holds 220,000 liters (that's more than 58,000 gallons) of wine, and has a dance floor built on top of it.