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.
Klean Kanteen Classic Stainless Steel Bottle with 3.0 Sports Cap (Option A) Iâm in love with the Klean Kanteen Classic Stainless Steel water bottle and not just because âKKâ happens to also be my initials. It is free of BPA, phthalates, lead and other toxins. The bottle is made from 18/8 food-grade stainless steel and the drinking valve is made from food-grade silicone.