Well, my wife is traveling to New Jersey to perform emergency work due to the Verizon strike that started last night at midnight. My poor wife. She'll have to work 12 hr days there, while still managing her team that's here. I already miss her. She'll be in New Jersey, so while I anxiously await her arrival at the Newark airport, I've been creating a spreadsheet to keep the records of my wine making procedures. Now, rather than write a lot of stuff on an index card, store it in a sandwich bag, I simply label that batch (i.e. Niagara 0805) on an index card, put it in a sandwich bag, not to be removed again until it ready to be discarded, and enter the date, time, SG, etc., on the Excel spreadsheet and the info is right here on my laptop when needed.
BTW.... wouldn't a really good f-pac be a can of Welch's concentrate, the same flavor as the wine? Just add as much as needed. It's unsweetened so I wouldn't have to worry about it affecting the SG and it wouldn't dilute the wine.