Measuring liquids is a routine laboratory practice. Accurate measurement of liquids is the basis of many experiments.
This section contains:
Video instructions
Quick instructions
Questions to test you've understood how to do the technique properly.
Video instructions
Watch this video to learn the steps to measure a solution.
Please make a list and write down what you think are the steps for measuring liquids.
Quick instructions
Tilt the measuring cylinder slightly and slowly pour the liquid into the bottle, stopping when the amount to be filled is slightly less than required.
Place the graduated cylinder horizontally on a table and add liquid to it using a plastic tip dropper. When the liquid level is at the required scale, the required volume of liquid is obtained.
Questions to test you've understood how to do the technique properly
Under normal circumstances, the volume of the liquid to be measured should not be less than 20% of the maximum capacity of the graduated cylinder. Why?
Place the graduated cylinder on a level table and wait for a while for the liquid attached to the inner wall to flow down before reading the scale value. Is this operation necessary?
When taking readings, the measuring cylinder should be looked down, horizontal or up.
The accuracy of the user’s eye in measuring the first milliliters of volume filling the graduate are the issue. Error greater than 5% in the measured volume is avoided by following the rule.
After the liquid is injected, if the liquid attached to the inner wall is not allowed to flow down, the final reading of the scale line will be small.
It should be viewed horizontally. Looking up will make the data read low, looking down will make the data read high.