Our vacuum pump is used to create a vacuum, removing the air to reduce the amount of oxidation & moisture. This will slow down the rate of deterioration in the food & prolong the life of your food. Use with our Vacuum storage boxes & bags. To activate the vacuum: Remove air using pump. Do not overpump (max. 10 to 15 times). Suitable for all box sizes. Part of Kuhn Rikon Vacuum Saver range. See our range of Vacuum storage boxes & bags.