Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
which is concentrated
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "which is concentrated" is correct and usable in written English.
It can be used to describe something that has a high level of concentration or density, often in a scientific or technical context. Example: "The solution, which is concentrated, must be diluted before use to ensure safety."
✓ Grammatically correct
News & Media
Science
Academia
Encyclopedias
Alternative expressions(1)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
Manufacturing, which is concentrated in these two provinces, has not yet rebounded to pre-crisis levels.
News & Media
A123's much smaller government division, which is concentrated in Michigan, will go to the little-known Navitas Systems.
News & Media
Highways, which were constructed explicitly for the modern car, are occupied less than 1% of the time, most of which is concentrated at traffic hot spots.
This galaxy weighs more than 200 million suns, over half of which is concentrated within a radius of just 80 light years.
Academia
Israel's stepped-up campaign against the Hamas leadership, which is concentrated in Gaza, included a March airstrike that killed the group's founder, Sheik Ahmed Yassin.
News & Media
Some of these projects are tied to the Port of New York and New Jersey, which is concentrated along the waterfront of the cities of Newark and Elizabeth.
News & Media
But environmental groups in both countries are pushing for a slowdown or even a halt to further oil sands development, which is concentrated in northern Alberta.
News & Media
In New York, Swatis generally live within the larger Pakistani population, which is concentrated in Coney Island, Brooklyn, and Astoria, Queens, among other neighborhoods.
News & Media
He also trimmed the hourly work force, which is concentrated in Britain and Germany, in part by using more common parts and processes.
News & Media
This was partly down to Iceland's tiny population of 325,000, more than half of which is concentrated in greater Reykjavik, roughly the size of Swindon.
News & Media
Unlike information technology, which is concentrated in a few cities, the health care sector is dispersed across the country and comes in many forms.
News & Media
Expert writing Tips
Best practice
When using "which is concentrated", ensure the noun it refers to is clearly defined to avoid ambiguity. For example, "The population, which is concentrated in urban areas, faces unique challenges."
Common error
Avoid using "which is concentrated" when referring to abstract concepts that cannot be physically concentrated. Instead of saying "The problem, which is concentrated on funding issues," consider "The problem primarily revolves around funding issues."
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "which is concentrated" functions as a non-restrictive relative clause, providing additional information about the noun it modifies. It describes where something is primarily located or gathered, adding detail without being essential to the sentence's core meaning. This is supported by Ludwig AI and by the numerous examples available.
Frequent in
News & Media
40%
Science
25%
Academia
15%
Less common in
Encyclopedias
10%
Wiki
5%
Formal & Business
5%
Ludwig's WRAP-UP
The phrase "which is concentrated" is a common and grammatically correct relative clause used to specify where something is primarily located or gathered. Ludwig AI confirms its validity and frequent use across various authoritative sources, including news, scientific, and academic domains. While alternatives like "that is focused" exist, "which is concentrated" provides a specific nuance suitable for formal and neutral registers. When using the phrase, ensure clarity by clearly defining the noun it refers to, and avoid misapplying it to abstract concepts.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that is focused
Replaces "concentrated" with "focused", offering a slightly more general term.
that is localized
Uses "localized" to emphasize a specific area or region.
that is gathered
Emphasizes the act of bringing together or accumulating.
that is clustered
Suggests a grouping or collection in a particular spot.
that is centralized
Implies a single point or location of control or importance.
that is amassed
Highlights a large accumulation in one place.
that is pooled
Suggests resources or elements collected into a shared reserve.
that is grouped
Implies the act of grouping things in the same place.
which is collected
Emphasizes gathering together, often implying a careful selection or process.
that is accumulated
Focuses on the gradual increase or buildup over time.
FAQs
How can I use "which is concentrated" in a sentence?
Use "which is concentrated" to describe something that is gathered or focused in a specific area or location. For example: "The manufacturing sector, "which is concentrated" in the northern region, contributes significantly to the economy."
What are some alternatives to "which is concentrated"?
Alternatives include "that is focused", "that is localized", or "that is clustered". The best choice depends on the specific context and the nuance you want to convey.
Is "that is concentrated" interchangeable with "which is concentrated"?
While similar, "which" introduces a non-restrictive clause, adding extra information, whereas "that" introduces a restrictive clause, essential to the sentence's meaning. Choose based on whether the clause is vital for understanding the sentence's core message. In most cases you can use "that is concentrated".
How does the formality of the context affect the use of "which is concentrated"?
The phrase "which is concentrated" is suitable for various contexts, from formal writing to news reports. However, simpler alternatives like "that is focused" may be preferred in informal settings for clarity and brevity.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested