When you save food in plastic containers and bags, there is always a risk of chemicals slowly leaching into your food. Especially when those containers are routinely washed in the dishwasher. Yes, the materials may have been labelled as ‘food approved’, but the effects over time when directly in contact with food are still uncertain.

Apart from the chemical problem, there is evidence that tiny pieces of plastic called “microplastics” and “nanoplastics” separate from containers and lids into your food. These plastic particles end up in the body, which poses severe health risks.

Glass, however, does not leach chemicals and does not disintegrate into your food. It has been a safe and trusted way of storing and preparing foods for centuries. And of course: 100% recyclable and sustainable!

Yes, basically any airtight glass jar can be used to use with vacuum. Airtender provides solutions for twist-top jars, clip-top jars and glass top jars. Be sure to select the proper lids for each jar, and when using jars with the Airtender Lid Punch, make sure that you only use metal lids.

Plastic jars or jars with plastic lids aren't suitable for vacuum. They simply aren't strong enough to resist the deep vacuum level that Airtender creates and will collapse or even implode.

Importantly, we also don't recommend plastic jars because they aren't sustainable, and can be a health risk beacuse chemicals and microplastics can potentially get into your food.

If you are using a canning jar with a screw typemetal lid, then the Lid Punch will work to make a hole for the Nanostopper.

You can use one-piece mason-jar type lids, or the two part type with a plate and screw ring. Regular twist-off lids with metal lids are also fine.

The Lid Punch has been designed to quickly and safely make a hole in metal twist-off and screw top lids. However, Like any other sharp kitchen tool such as a knife or scissors, you need to be mindful when using the Lid Punch.

Also, when removing the cut-out metal disc, keep in mind that the disc itself can be sharp. So always use a kitchen towel or cloth to remove it from the Lid Punch.

Just carefully study and always follow the instructions, and you will be punching holes in lids without any problems.