Can the container for water on the receiver box have a plastic or metal lid, like a mason jar? Or does it need to be entirely made of glass?

A glass container is recommended for water imprinting whenever possible.

A mason jar with a plastic or metal lid can still be used, as the scalar field can pass through most materials, but glass is generally preferred because it is a more neutral and stable material for storing imprinted water.

For the best imprinting and storage experience, we recommend using a clean glass container and keeping it closed during and after the process.