The phrase "a proper alternative for" is correct and usable in written English.
It can be used when discussing options or substitutes for something specific.
Example: "When considering different methods of communication, email is often seen as a proper alternative for traditional mail."
Alternatives: "an appropriate substitute for" or "a suitable replacement for".
It is observed that truncating the Wild sum expansion up to the third order approximation of the TRMC scheme, may be a proper alternative method for the DSMC method in simulating the lid-driven micro cavity problem for Knudsen numbers 0.005≤Kn≤0.1 with reasonable accuracy and simplicity in mathematics.
After chairing Cobra, Cameron said there would be "no restrictions on help" and pledged a "proper alternative service" for travellers affected by the collapsed railway line in Dawlish, Devon, which will be out of action for about six weeks.
Since, freeze dryer is an expensive method to apply in the commercial scale; spray dryer may be a proper alternative technique for producing durian seed gum.
Pteridologists are therefore in strong need of a proper alternative method for gametophyte identification.
Diane Von Furstenberg, whose dresses the duchess has worn, said that she represents a craving for a proper alternative to the "housewives," a reference to the popular television reality series.
Thus, using pooled data does not always seem to be a proper alternative and requires further research.
Bratby et al. quoted that level 1 evidence has established the role of UFE as a proper alternative treatment [ 16].
Flanged cruciform sections are proper alternatives for columns of orthogonal moment-resisting frames because of their outstanding structural characteristics and their easy fabrication process, especially regarding continuity plates.
Once user fees are implemented, however, their sudden removal without proper alternatives for financing services can also be disastrous, as shown in South Africa and Uganda where staff salaries were negatively affected with a marked impact on their morale [ 95].
