Callbration of air sampling pump - Lab Report Example

The volume flow rate, in this case, was a concept introduced to determine the volume of a fluid flowing past a given cross sectional area per second. In which case, the air sample is collected with a vacuum pump thereby allowing for determination rate of flow and time. The product of the sampling rate and sampling time gives the volume of air sampled. This hints on the importance of determining the volume rate at which the air pump is sampling air. The formula normally used for determining the volume flow rate is as follows: The concept of volume flow rate of air formed the basis for this lab, whereby an air sampling pump used.

Soap solution is used and the time it takes a soap bubble to rise in the air sampling pump is recorded. Finally, the volume of the air is divided by the time taken to give the flow rate. An air sampling pump was obtained from the lab technician. The air sampling pump was calibrated against a 250 ml calibrator. Clamp and stand was set and burette fixed in place. 250 Ml burette was then obtained and filled with soap solution. A soap solution was prepared in a petri dish and then 250 ml of the solution was transferred into the burrete.

With the 250 ml calibrator, the rise of the bubble through the 250 ml volume was timed using the stop watch. The time was recorded for trial 1. The whole procedure was repeated 4 more times with consistency for trial 2 to trial 5. The average for the consistent times was then computed and the result converted to liters per minute. The experiment was successful in achieving the objective previously stated thereby proving the validity of calibration of air sampling pump. The calibration process, during the experiment, paved way for obtaining the variables required in calculating the volume rate of air.

The volume of the sample air was determined and the rise of the bubble timed. From the calibration, the experiment was