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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
a same quantity of
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a same quantity of" is not correct in English.
The correct form would be "the same quantity of." Example: "We need to ensure that we have the same quantity of materials for both projects."
⚠ May contain grammatical issues
Science
News & Media
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
1 human-written examples
In SF, even if the level of energy is high in the morning and low in the afternoon, hens seem to be able to regulate their feed intake to have a same quantity of energy intake compared with continuous diet.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
As a control, the same quantity of inhibitor (184 nl corresponding to 20 oocytes worth of inhibitor) was added to 5 ml of buffer (36.8 nM final) prior to addition of 20 oocytes and 5 min incubation.
Science
That, together with the energy losses involved in generation and transmission of electric power, means that on average, an air conditioner causes more greenhouse emissions when pushing heat out of a house than does a furnace when putting the same quantity of heat into a house.
News & Media
The new beef is reared in Wales and sired by a bull called Shogun, whose semen Asda is able to sell for about £7.50 a "straw", whereas the same quantity of wagyu tadpoles ordinarily cost about £50.
News & Media
A solution containing the same quantity of alkali, salinity and core sample was used as blank solution.
These values mean that sand flies feeding on chickens would have to ingest twice as much blood as those on mammals to obtain a meal containing the same quantity of erythrocytes.
Science
The detection of such trade-offs, however, assumes that all females within a population allocate the same quantity of resources to reproduction, which is not necessarily the case when females differ in quality (e.g. age or size) or resource acquisition [ 6, 7].
Science
Therefore an injection with the same quantity of fluid at both sites, results into faster development of a compartment syndrome in the finger top compared to the hand palm [16, 20].
(A human would have to drink 10,000 bottles of wine a day to consume the same quantity of resveratrol).
News & Media
When it is burnt, a given volume produces the same quantity of carbon dioxide as conventional gas does.
News & Media
One example is that of a grain-elevator operator who buys wheat in the country and at the same time sells a futures contract for the same quantity of wheat.
Encyclopedias
Expert writing Tips
Best practice
When referring to non-countable nouns, consider using "the same amount of" as a more versatile alternative.
Common error
Avoid using the article "a" before "same" when referring to quantity. "A same" is not grammatically correct. Always use "the same" to indicate equivalence.
Source & Trust
84%
Authority and reliability
2.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a same quantity of" functions as a determiner phrase intended to specify an amount. However, this construction is grammatically incorrect. According to Ludwig AI, the correct form is "the same quantity of."
Frequent in
Science
50%
News & Media
38%
Encyclopedias
12%
Less common in
Wiki
0%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "a same quantity of" is flagged by Ludwig AI as grammatically incorrect; the correct form is "the same quantity of." This phrase aims to express that two or more things have an equivalent measure. Though its intent is clear from the context, the inaccurate grammar impacts its effectiveness, particularly in formal or professional settings. As Ludwig's examples show, it appears across various contexts such as science, news, and encyclopedias, however, it is not very common. Using alternatives such as "the same amount of" or "an equal quantity of" can also improve clarity and grammatical accuracy.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
the same amount of
Replaces "quantity" with the more general "amount", maintaining the meaning of equivalence.
an equal quantity of
Substitutes "same" with "equal", emphasizing the equivalence in measure or number.
the equivalent quantity of
Replaces "same" with "equivalent", highlighting that the amount is functionally equal, though potentially measured differently.
identical amount of
Uses "identical" instead of "same" and "amount" instead of "quantity" stressing exact correspondence in amount.
a similar quantity of
Indicates near equivalence, a quantity that is almost but not necessarily exactly the same.
the matching quantity of
Implies a quantity that corresponds with another, often used when pairing items.
the commensurate quantity of
Suggests a quantity that is proportional or corresponding in measure, often used in more formal contexts.
the like quantity of
A more archaic or formal way to express a similar or equal quantity.
the selfsame quantity of
This intensifies the 'sameness', though it is less common in modern usage.
a comparable quantity of
Suggests the quantity can be compared to another, implying similarity but not necessarily equality.
FAQs
What is the correct way to say "a same quantity of"?
The grammatically correct way to express this is "the same quantity of". Using "a same" is incorrect.
What can I use instead of "a same quantity of"?
You can use alternatives like "the same amount of", "an equal quantity of", or "the equivalent quantity of" depending on the context.
Which is correct, "a same quantity of" or "the same quantity of"?
"The same quantity of" is correct. "A same quantity of" is grammatically incorrect and should be avoided.
In what contexts would I use "the same amount of" instead of "the same quantity of"?
"The same amount of" is generally used for non-countable nouns, while "the same quantity of" is used for countable items, although "amount" can often be used more broadly.
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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
2.3/5
Expert rating
Real-world application tested