Calibration of Volumetric Flask

 

Calibration of Volumetric Flask

Calibration of 100 ml Volumetric Flask

¨  Properly wash, clean, dry and cool the flask.

¨  Put the clean flask on weighing balance and tare it.

¨  Fill the flask with distilled water up to the mark i.e 100ml.

¨  Note the temperature of water with the help of calibrated thermometer.

¨  Note down the observed weight in grams as “W”

¨  Now determine the volume in ml using following formula

¨  Volume (in ml) = weight (in gm.)

                                       0.997

¨  0.997 is density of distilled water at 25^oC.

¨  Repeat the process for 3 times to attain consistent results.

¨  Variation in volume can be calculate using following equation

¨  Volume Variation (+ml) = Theoretical volume – Actual volume

¨  In case of volumetric flask having capacity more than 100ml its final volume can be calculated in multiple steps using 50-100ml burette of Class A.