Airtight does no mean removable of air (O2 in particular), but rather it means non-permeable (or close). Substances in the container will be oxidized by the air trapped in the container, but additional oxygen will not (or only minimally) introduced.
To free the stored substances you either need to vacuum pack or nitrogen purge.
Now that makes sense, thank you. So the answer is: it does NOT create a vacuum. It just means the air between the lid and the contents is less than with other jars because the lid is closer to the indredients.
Hi Bruce! So, the black insert that you can see in the photos is what helps remove the air inside these canisters. When this insert is forced down into the canister, the excess air between the top of the canister and whatever is inside is pushed out through the insert's fluted sides. This creates a vacuum and an airtight seal. If you have any additional questions about this please feel free to direct them to [email protected].
ok, thanks for the explanation, but that doesn’t really explain how it creates a “vacuum”. It only explains that there is less air in the canister because the lid is closer to the ingredients. To create a true vacuum, you need a pump. Is there a pump ? If now, how on earth does it create a vacuum?
4 Comments
To free the stored substances you either need to vacuum pack or nitrogen purge.