The phrase "a more stringent test" is correct and usable in written English.
It can be used when referring to a test or evaluation that is more rigorous or demanding than another.
Example: "In order to ensure the highest quality, we have decided to implement a more stringent test for our products."
Alternatives: "a tougher test" or "a stricter evaluation".
Test prints were very good, although I wish I'd had some photo-quality paper for a more stringent test.
Returning lifeguards have to requalify every year, and rookies have to pass a more stringent test that was given May 15.
When the regulation was developed in the early 1970's, the traffic agency originally proposed a more stringent test where greater force was applied to two sides of the roof.
Cases relating to more kettling at more recent protests have been put on hold pending this ruling and one can only hope that when the supreme court considers whether the containment of the climate change camp sit-in at the G20 protest is lawful, it will impose a more stringent test than is to be found in this disappointing decision.
Although the Record had been legally free to name the complainant, it said, "the code sets out a more stringent test than the law in that, regardless of the legal position, publications may not name victims of sexual assault unless there is 'adequate justification' to do so.
A more stringent test will mean that Europe's target for average carbon-dioxide emissions of 95g/km by 2021 will have to be revised upwards (the French and German governments are already seeking to delay the next target, which is to take effect in 2025).
We therefore argue for the importance of examining within-country effects as they provide a more stringent test of causality.
Because conceptual separability is the undisputed law of the land, infringement is more likely to be found than under a more stringent test such as literal separability.
It is demonstrated that this case presents a more stringent test of the applicability of the method than the case of convective heat transfer.
Entering the pluripotent ICM lineage is considered a more stringent test for naïve state ESCs (Gafni et al., 2013; Takashima et al., 2014).
Correspondents say that Sweden could apply a more stringent test than that used when an extradition is sought from the United Kingdom.
