3. Volumetric Flask
• Weigh out a specific mass of solute on a
clean, dry clock glass.
• Add the solute to a beaker
containing a small volume of water.
• Using a wash bottle wash all
traces of the solute from the
clock glass into the beaker.
• Stir the mixture with a clean glass rod.
4. Volumetric Flask
• Using a funnel transfer the contents
of the beaker into a clean
dry volumetric flask.
• Wash all traces from the beaker, glass rod
and funnel into the flask.
• Continue to add deionised water into the
flask until the level is just below the mark on
the flask.
5. Volumetric Analysis
• Using a dropper fill the
rest of the volumetric flask
until the bottom of the
meniscus is on the mark.
8. The Pipette
• Rinse with deionised water.
• Rinse with some of the solution it is to
contain.
• Use a pipette filler to draw the level
of the liquid to above the mark.
• Allow the liquid to run into a waste beaker
until the bottom of the meniscus is on the
mark.
9. The Pipette
• Touch the pipette against the side of a glass
beaker. This will remove any droplet of
liquid that might be adhering to the pipette.
• Allow the liquid to drain under gravity in to
the conical flask.
• Touch the tip of the pipette to the side of the
flask but do not blow the last drop out.
11. The Burette
• Rinse with deionised water.
• Rinse with some of the solution it is to
contain.
• Use a small funnel when
filling the burette.
• The burette is filled almost to the top and
then the tap is opened to fill the part below
the tap.
• Re-fill the burette until the bottom of the
meniscus is on the mark.
13. Conical Flask
• Its design allows it to be swirled without the
solution splashing out.
• Before use, wash out with deionised water.
• Do not wash out with the solution it is to
contain.
• It will be holding an exact volume of a
solution and so if it was washed prior to this it
would have droplets that would affect this
volume.
