The phrase "a separate package" is correct and usable in written English.
It can be used when referring to an item or set of items that are distinct from others, often in the context of shipping, software, or project management.
Example: "Please ensure that the fragile items are sent in a separate package to avoid damage during transit."
Alternatives: "an individual package" or "a distinct package".
A separate package of $1 billion a year would be set aside for the restoration of coastal areas, including measures to restore wetlands, ease beach erosion and otherwise repair local ecosystems affected by oil drilling.
The individual chips are cut apart and each chip is wired into a separate package.
It also offers a separate package of about 15 channels from Spain and Latin America.
Renzi is also due to unveil a separate package of economic measures and tax cuts.
Today the Food and Drug Administration gave Schering permission to sell ribavirin in a separate package, under the name Rebetol.
And Mr. Miller said that he was in support of some changes, but that he wanted to push a separate package to make the Council more efficient.
Entries in a separate packaging contest had to be cost-effective, technically sound, easy to make and use, and meet safety, health and environmental standards.
In the third-generation packaging system the Rev gene is encoded on a separate packaging plasmid, leading to increased biosafety [ 4].
The lack of data cleaning functionality in some packages tended to be the result of a design decision to split this functionality into a separate software package rather than a value judgement about its usefulness.
A separate software package called the wafer map editor (WME) was developed to generate setup data needed during the runtime of the inspection process.
The machine then goes out and identifies targets; and right before lethal engagement, a separate software package called the "ethical governor" measures the proposed action against the rules of engagement and international humanitarian law.
