Thanks unyquity, this is a big, big help.. I was so close yesturday to buying the ones I had found from the link in my previous message. I will probably go for the ones on the Just Preservving website,. For my daily juicing, I wanted to go 10 "doses" of juice a day with each containing 13 oz to get to 128 oz a day. The smallest jar they do is 500ml.. which i think converts to around 16 oz. So, as its important to fill right to the top, can i fill the remaining gap (around 3oz) with water?