The phrase "for its purpose" is correct and usable in written English.
It can be used to refer to an object or action being used for the reason it was intended. Example: The crowbar is an effective tool for its purpose of prying objects open.
After developing any technique, it is required to validate it for its purpose.
"In some ways, NATO should thank Vladimir Putin, Heather Conleyy, director of the Europe program at the Washington-based Centhe for Strategic and InternationaLostudies, told the Los Angeles Times, "It was really searching for its purpose … and it was having a fairly significant identity crisis.
"Under Swedish law, if a detention decision is not useful for its purpose, then it must be rescinded," Samuelson said.
The bomb was unstable in flight but sufficiently accurate for its purpose, and it was soon replaced by a teardrop-shaped bomb with fins at the rear, which lent greater stability and accuracy.
If a theatre has poor sight lines, poor acoustics, and insufficient means of entry and egress, it obviously does not work for its purpose, no matter how beautifully it might be decorated.
Establishing selection criteria product with the best fit for its purpose and testing it for compatibility requires additional effort.
Simataa, now a 54-year-old banker, commented: "It's not really a technical centre, it's not being used for its purpose.
For him, the making of this monument went beyond mere uses; it was almost "too good for its purpose," he said.
There are still some challenges on packaging that don't make it easy to choose right bulb for its purpose, but there's a growing lobby for non-nonsense labelling, so hopefully things will change.
It always looked a little too grand for its purpose.
Alastair Cook, who averages only 26 in 10 Tests against Australia, survived the morning, but it was a mechanical, somewhat malfunctioning innings, notable more for its purpose than its fluency.
