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.
Slide O Mix Trombone Water Spray Bottle. All sizes are characterised by a very fine spray-mist. A real hit is the smallest one of this family - the 10ml size can spray 100 times with one filling. It is ideal for gigbags, smaller trombone-cases and your trouser pocket. Size : Small - 10ml. Size : Large - 50ml.