Abstract: Jar adaptors are provided for mounting jars and aiding in the application of vacuum to the jars. The jar adaptors are configured to mount jars having openings of various sizes. The jar adaptors are configured to mount jars, provide vacuum to the jars, and be subsequently removed from the jars after vacuum has been applied to the jars. Vacuum is maintained in the jars with the aid of a seal formed between the openings of the jars and lids disposed over the openings.

Abstract: A stopper is provided for mounting a container and aiding in the application of vacuum to the container. The stopper comprises a visual indicator for indicating when a predetermined level of vacuum has been reached in the container. The bottle stopper comprises one or more ribs for mating with containers having openings of various sizes.

Abstract: In an aspect of the invention, a resealable vacuum bag is provided that is configured to stand upright when a storage compartment of the resealable vacuum bag is under vacuum. In preferable embodiments of the invention, the resealable vacuum bag includes a sealing member that is configured to seal (or close) the resealable bag prior to the application of vacuum. Vacuum is applied to the storage compartment through a vacuum member in fluid communication with the storage compartment at a vacuum application area of the resealable bag. A filtering member may be provided to prevent fine material (e.g., grains, powders) from entering the vacuum member during the application of vacuum to the storage compartment. In another aspect of the invention, a resealable vacuum bag having one or more filters is provided. In yet another aspect of the invention, a vacuum bag having a spout is provided.