Guidelines for Selecting Liquid Measurement Devices
- Always select the smallest device (graduate, pipet, syringe) that will
accommodate the desired volume of liquid. This will minimize the potential
for errors of measurement associated with misreading the scale.
- Use a graduated pipet, syringe, or calibrated dropper to measure/deliver
volumes <1 ml.
- Remember that oily and viscous liquids will be difficult to remove
from graduates and pipets, and at best require long drainage time. Consider
using a disposable syringe instead, or better yet, measuring by weight
rather than volume.
- Never use prescription bottles, nonvolumetric flasks, beakers, or household
teaspoons as measurement devices, unless you calibrate it yourself.
- When small (<5 ml) or very accurate doses are required, provide
the patient with a calibrated dropper, oral syringe, or similar device
to ensure proper dosing.