WASTEWATER
By Rick LallishWhich laboratory glassware is the most accurate means of delivering a measure of volume?A. Graduated cylinderB. BuretteC. PipetteD. BeakerAnswer: C. There are many ways of delivering a volume of liquid in laboratory operations, but the most accurate tool is the pipette. There are two types: the graduated (or Mohr) and the serological. They are similar except the tips are different. Graduated cylinders are more accurate than beakers but not as precise as pipettes. Pipettes are drawn by suction; using your mouth is not recommended. More information may be found in the CSU-Sacramento textbook: Operation of Wastewater Treatment Plants, Volume 1, Eighth edition,
