Veggies in sealed mason jars

This is a different thing completely to the wife and I. She's gotten so tired of her lettuce and celery turning brown in the fridge within a week. She's even wrapped them in paper towels and put the in ziplock bags. I will tell all that our arms are sore from pumping that vacuum pump. It's not a perfect seal with the tape over the hole in the lid but it's weird how it can seal somewhat over the taped hole. She did grapes as well and doing all this per servings. I'll definitely let all of you know within a week or so how this compares to veggies in zip locks, Tupperware, and in these jars.
Thanks again,

Mike