The phrase "a proven quality" is correct and usable in written English.
It can be used to describe a characteristic or feature that has been demonstrated to be effective or reliable over time.
Example: "The product is known for its durability, which is a proven quality that customers appreciate."
Alternatives: "a demonstrated quality" or "a verified quality".
"I think he has a proven quality both on the judicial end and on the administrative end".
The winner of chases in the French provinces in October and November, Triolo D'Alene presumably cost connections as a proven quality chaser with his novice status still intact, but he could hardly have made a more impressive British debut than when beating Ackertac at Ascot last month.
The omission of Ben Stokes, a proven quality Test batsman even without his bowling, was bewildering: he is a considerably better player than Vince and there is no reason why as an all-rounder he could not bat at five given Jacques Kallis played over 160 Tests batting in the top five in almost all of them.
In other words, it's clear that while Shark Tank can drive traffic in droves, it's not a proven quality filter.
4. Sarah Perez wrote about the "Shark Tank" effect on apps, and how while being on the show can drive traffic to your app, it's not a proven quality filter.
"It will be a test for him in South Africa but he's a proven quality in international cricket and will be desperate to play for England again".
The methodology presented in this study uses the desirability analysis, an adoption of proven quality tools in engineering, while the needed 'experimental' measurements were performed via finite elements analysis (FEA).
"He is a great player, with proven quality at both club and international level.
"He is a great player, with proven quality at both club and international level," Wenger said of Özil, adding, "We have watched and admired him for some time, as he has all the attributes I look for in an Arsenal player".
Arsenal manager Wenger said: "He is a great player, with proven quality at both club and international level.
"It is a difficult one, because David has so much proven quality, but my feeling is that we've had a revolution at this club this summer.
