Pour each of the packages of Jell-o in separate gallon size sealable bags and set aside.
Rinse the grapes in a strainer and remove any stems from the grapes. Drain the water off of the grapes. Then squeeze the lemon juice over the grapes and toss them to coat them in the lemon juice.
Then evenly divide the grapes into the 5 zip lock bags. Seal the bags and shake them to coat the grapes in the powdered Jell-o.
Remove the grapes from the bags. Place the grapes on a baking sheet and chill for at least 2 hours (overnight is preferred).
Then the grapes are ready to serve and enjoy!
Notes
Refrigerate the leftovers in an airtight container for up to 2 weeks or freeze for up to 3 months.