seanmichaleen
Active Member
Take an empty jar and use your device to seal it. Then submerge the jar, lid down and straight up and down, not angled. Pry the lid off for a second then replace the lid before taking the jar out of the water.
You'll know how much air your leaving in the jar by how much water was allowed to rush in.
I use a brake bleeder and it pulls around 85% of the air out of the jar. I'm curious to see what kind of vacuum those devices pull
The Reynolds vacuum sealer looks like it is taking between 75-80% of the air from the mason jars. Thanks for the input on how to test it!