# Lab Report: ﻿Calibration of Volumetric Glassware Essays

Words: 1643
Pages: 7

Calibration of Volumetric Glassware

Nur Farah Nabilah Binti Ahmed Zhaini
Maisarah Binti Alias

Summary
In this experiment, The purpose of this experiment is to investigate the measurement of the actual volume contents of volumetric glassware. In the beginning of the experiment, the volumetric glassware should be clean and dry before used. The volumetric glassware, measuring cylinder and pipette should be handled with care and all the precautions were be taken during the experiment was held. This was to ensure to avoid any errors such as parallax error especially while reading water meniscus. This experiment must be repeated three times or more and take the average reading to get more
f) The following equation was used to convert mass to volume :

Volume(actual) = (grams of water) x (volume of 1g of water in table1)

g) Step a - f was repeated using 25ml pipette.

1)
2) Calibration of volumetric flask (100ml)
a) A 100ml volumetric flask was cleaned and dried.
b) The flask was weighted. Then, water was filled into the flask. Transfer pipette was used to remove the excess amount of water filled in the flask so that it exactly reach the calibration mark.
c) The flask filled with water was weighted to find the mass of water contained in the flask.
d) Mass of water was converted to volume using the equation above.

3) Calibration of a measuring cylinder (100ml)
a) A 100ml measuring cylinder was cleaned and dried.
b) The measuring cylinder was weighted. Then, water was filled into the measuring cylinder until it reached the calibration mark. Transfer pipette was also used to remove the excess water.
c) The measuring cylinder filled with water was weighted to find the mass of water contained in the measuring cylinder.
d) Mass of water was converted to volume using the same equation.

Result and Discussion
Result:
a) Data
10mL pipette
Trial 1
Trial 2
Trial 3
Mass of flask + water (g)
42.64
42.66
42.66