For storing liquid and dry pectin, you must use different storage methods. You can keep the powder in the pantry. You must utilize it within the year. If you save it for the following season, then it might not perform too well. For storing liquid pectin, you must use a refrigerator and use it within one week.If you prepare pectin at home, then you should keep it in the fridge for up to 3 days. For using it for a longer period, you can preserve or freeze it utilizing some boiling water bath canner. When you freeze pectin, then it would last up to 6 months, whereas you can use canned pectin for nearly one year.