[-Mac]

Mac Airscapes and other such containers displace the air inside the canister, they don't pump it out, but reduce the amount of air inside. If using a pump you can reduce the pressure inside to less than atmospheric so a partial vacuum, which as Dave says could leach oils etc out of the beans. Also as the beans gass off this vacuum will be reduced over time. Now I 'spose it depends on how much faff you want every time you open a container of beans, but I like the Airscapes simplicity and I would get pretty bored of pumping air out every time I wanted to grind some beans. Each to their own though.

It's exactly the same principle. With an Airscape, you push down the seal and a lot of air comes out. With the bottle stopper, you push doen the plunger and a small amount of air comes out. The Airscape and the wine bottle both have rigid sides. The only difference I can see is that the Airscape is a bit quicker and once you're down to the top of the beans there's no way to take and more air out - leaving a partial vacuum. With the stopper, you could pump until the removal of air sucks pretty much all the air out and then the oils might leach, but you simply stop pumping before that happens and leave a partial vacuum - just like the Airscape.

 

[AlanSky]

Mac I don't think they are the same mate. The Airscape is a tool to displace the air (displacement pump), it will hit the top of the stored beans and will stop the displacement once the beans don't move any more. The air that is stored between the beans is still there and will not be removed. The bottle stopper I think removes the air inside the container by using a type of air vacuum pump. In effect you are forcing the air inside the container out a little at a time. In this way you can create a partial vacuum, and you can theoretically keep pumping to create a vacuum. Without a pressure gauge you will not know if you are creating a negative pressure. I may be wrong, I don't have one of these wine stopper things, but I think thats how they work.

 

[dutchy101]

I've got an Airscape and also recently picked up a couple of CoffeeVac TightVac containers which seem to work pretty well too.

https://www.bellabarista.co.uk/tightvac-coffee-storage-container.html

 

[Nightrider_1uk]

Both finish up with wet beans if opened too soon

Never had that problem. I take them out and use then straight away, then put the rest in an air tight container, they are always dry the next time I use them.

 

[ajohn]

Never had that problem. I take them out a

I do so don't do what you do.