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.
Bottles Facts: The bottles are exact replicas â down to the embossed â57â on the bottleâs neck â of the Heinz Ketchup 14-ounce glass bottle. Each bottle includes 8,000 pounds of fiberglass, 375 feet of neon tubing, and 20,500 light-emitting diodes (LEDs).