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 toughest bottles to collect are the early Hutchinson bottles, the first bottles for Coca-ColaÂ®, which were used from the mid 1890s to the early years of the 20th Century. Because they were in the market for a limited period of time, they're hard to find. In good condition, they can bring premium dollars. Petretti's guide lists a Hutchinson bottle with a script-lettered logo ranging from $2,500 to $4,000. Some sell for even more today. There are only a dozen or so varieties of Hutchinson Coca-Cola bottles from a few towns in Alabama, Georgia, Tennessee and Mississippi.