The phrase "a proper substitute for" is correct and usable in written English.
It can be used when discussing alternatives or replacements for something, indicating that the substitute is appropriate or suitable.
Example: "While fresh herbs are preferred, dried herbs can be a proper substitute for them in many recipes."
Alternatives: "an adequate replacement for" or "a suitable alternative to".
PIP is a proper substitute for antibody.
Although this small recombinant fragment of NS3 protein was almost completely soluble and expressed more efficient respect to whole NS3 molecule, it did not show enough sensitivity and specificity to be a proper substitute for NS3 as ELISA antigen to detect specific antibodies against BVDV.
Glass Fiber Reinforced Polymer (GFRP) bars as a proper substitute for traditional reinforcing steel bars not only eliminate the durability problem due to corrosion of reinforcing steel, but also provide remarkably enhanced capacity due to their high tensile strength compared to that of the steel bars.
Due to difficulties with using antibiotic growth promoters in poultry diet, mushroom wastes seem to be a proper substitute for them.
As the counterfactual mean for those being treated, E[Y 0)/D = 1] is not observed, one has to choose a proper substitute for it in order to estimate the average treatment effect (ATT).
As the counterfactual mean for those being treated, E[Y 0)|D = 1] is not observed, one has to choose a proper substitute for it in order to estimate the ATT.
The question on a proper substitute of the cohomology for curved sequences seems to be considerably subtle (see [3, 4]).
For overcoming this problem, ANN can be used as a proper substitute method for response estimation.
"For something as important as this there is no proper substitute for a judicial hearing and a decision by a judge on the facts found," Burnside said told the ABC.
For Ms. Islam, a 40-year-old British artist born in Bangladesh, there is no proper substitute for celluloid.
In years to come gripes that the show has no new Simon Cowell may give way to complaints that there may be no proper substitute for Ms. Lopez.
