Make sure the containers are made from materials compatible with the solids to avoid any cross contamination. Keep any containers tightly closed and make sure every step of the process uses clean containers.
- using cleaned and dried pipettes
- avoiding the contact of the pipettes tip with other materials
An oral syringe
To avoid cross contamination.
Avoid breaking and internal contamination of a pipette; read any indications of the manufacturer.
To avoid contamination of the substances from the drawer.
Storing flammable liquids require safety and precaution. If you plan on storing flammable liquids in a storage unit, it is highly recommended to label the storage units accordingly This will avoid any accidents.
Dispensing valves are in-line valves for on-off service in dispensing liquids from storage containers. Flow will occur when the middle of the valve is pinched and will continue as long as finger pressure is maintained.
An oral syringe
either an Beaker,and graduated Cylinder
use a linear workflow
to avoid contamination
To avoid splashing of liquids.
To avoid splashing of liquids.
To avoid cross-contamination, and indeed all other forms of contamination.
To avoid cross contamination.
To avoid contamination of the instrument.
Two toothpicks are used to avoid cross contamination.
The best way to avoid contamination of samples in experiments is to limit contact with anything not necessary in the experiment. Specialized equipment may also help with this regard, such as the use of glass to avoid unwanted chemical reactions.