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.
The pummelo (Citrus maxima) â known also as the pomelo, the shaddock, the French chadec, the Malayan limau besar, the Bali lemon, and the Chinese grapefruit â has the distinction of being the largest citrus fruit. It is, essentially, a kindler, gentler, giant cousin of the grapefruit.