Once opened, Formula (prepared) keeps about 1 day in the fridge.
That's the longest window published for Formula (prepared) — opened in the fridge is its best case.
| Situation | Keeps for |
|---|---|
| Opened · pantry | 1 hour |
| Opened · fridge | 1 day |
Specific to Formula (prepared), from its USDA FoodKeeper v128 entry:
And the general signs for baby food:
Air and warmth are what shorten an opened item's life — the right container buys back the days the packaging gives up once the seal's broken.
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About 1 day refrigerated at 40°F (4°C) or below, according to USDA FoodKeeper v128.
Formula (prepared) is shelf-stable at room temperature: cool, dry pantry, sealed — refrigerating after opening is optional and mainly preserves quality. Refrigerating it mainly preserves quality rather than safety.
USDA FoodKeeper v128 publishes this for Formula (prepared) — pantry storage: Should be discarded after use-by date. Beyond that, the general signs for baby food are: A lid that doesn't pop when you first open it; Off smell or a colour change; Mould, or contents that have separated; Any leaking, bulging, or rusted container. Never taste something to test it — when in doubt, throw it out.