This answer would be temperature dependant and determined by the salad ingredient that would spoil the quickest. For tuna salad, I would think the tuna would spoil quickest. This is from Bumblebees website regarding canned or pouched seafood; "once cans or pouches are opened, any unused contents should be immediately refrigerated and utilized within one to two days"
The USDA says to throw it out after 2 months in the refrigerator
If stored properly in a cool, dry section of your refrigerator, An Apple can stay fresh for close to 4 months.
Royal pudding pies should stay fresh 3 - 4 days in the refrigerator if covered properly.
500 years
2days.
10 years.
i don't think it will help the lifespan of the flowers
till 16 hours maybe well if u have it in the refrigerator it will be fresh always
for at least 2 weeks
about three days or less
Salad can typically stay fresh in the fridge for about 3-5 days before it starts to go bad.
You Shouldn't leave it out for to long but about 6 hours if in package if not about 3 hours