a clear supernatant

USAGE SUMMARY

The phrase "a clear supernatant" is correct and usable in written English.
It can be used in scientific or laboratory contexts, particularly when discussing the liquid that remains above a solid residue after centrifugation or sedimentation. Example: "After centrifuging the sample, we observed a clear supernatant that could be collected for further analysis."

✓ Grammatically correct

Science

Human-verified examples from authoritative sources

Exact Expressions

23 human-written examples

Centrifugation was achieved at 3000 RPM for 15 min to obtain a clear supernatant.

International Journal of Recycling of Organic Waste in Agriculture

After centrifugation, a clear supernatant was obtained which was analyzed for total platinum (Pt).

Cancer Nanotechnology

It was a dark brown suspension with fine brown deposit and a clear supernatant.

Annals of Intensive Care

The gel was repeatedly cleaned ultrasonically with distilled and deionized water until the suspension yielded a clear supernatant after 10 minutes of settling.

Geochemical Transactions

The Mn solid was collected through centrifugation and washed with DI water several times, until the remaining KMnO4 was removed as indicated by a clear supernatant.

Geochemical Transactions

Then, the fermentation broth was centrifuged to obtain a clear supernatant.

Plosone

Human-verified similar examples from authoritative sources

Similar Expressions

37 human-written examples

The washing procedure was repeated at least three times, yielding each time a clearer supernatant.

ACS Applied Materials & Interfaces

This sheared DNA was then centrifuged and a cleared supernatant was used for protein/DNA immunoprecipitation.

BMC Cancer

The suspension was centrifuged in 1.5 ml Eppendorf tubes and at 10 krpm, 4°C, 10 min. After the first centrifugation, a large pellet is obtained which consists of a mix of membranes, and with a fairly clear supernatant.

Biological Procedures Online

A practically clear supernatant was obtained within 15 min.

Applied Water Science

The supernatant was centrifuged three times to yield a final clear supernatant.

BMC Cancer

Expert writing Tips

Best practice

When documenting experimental procedures, specify the exact centrifugation speed and time used to obtain "a clear supernatant" to ensure reproducibility.

Common error

Do not assume that "a clear supernatant" is completely pure. While it may lack visible particles, it can still contain dissolved substances that could interfere with downstream analyses. Further purification steps might be necessary.

Linguistic Context

The phrase "a clear supernatant" functions as a descriptive noun phrase, typically acting as the object of a verb or the subject of a clause. It describes the state of the liquid after a separation process. Ludwig AI provides examples in scientific contexts, reinforcing this function.

Expression frequency: Very common

Frequent in

Science

100%

Less common in

News & Media

0%

Formal & Business

0%

Encyclopedias

0%

Ludwig's WRAP-UP

In summary, "a clear supernatant" is a phrase widely employed in scientific contexts to describe the liquid portion of a mixture that is free from visible particles after separation. Ludwig AI's analysis indicates that the phrase is grammatically correct, very common in scientific literature, and serves the purpose of describing a physical characteristic. Its register is formal and scientific, and its use is crucial for accurately documenting experimental procedures. Remember that while clarity is important, it does not guarantee complete purity. While the phrase is well established in scientific writing, be aware of its limited usage outside of these contexts.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

a transparent liquid layer

Replaces 'clear' with 'transparent' and 'supernatant' with a more general 'liquid layer', emphasizing visual clarity and stratification.

a clarified solution

Uses 'clarified' instead of 'clear', implying a process of purification, and 'solution' instead of 'supernatant', broadening the context.

a particle-free liquid

Focuses on the absence of particles in the liquid, highlighting the purity aspect implied by 'clear'.

a purified liquid phase

Emphasizes the purification aspect and replaces 'supernatant' with 'liquid phase', suitable in chemistry-related context.

a decanted liquid

Focuses on the action of decanting, implying the separation process that results in the clear liquid.

a residue-free liquid

Highlights the absence of residue, synonymous with clarity in the context of liquid separation.

a filtered liquid

Specifies the filtering process, suggesting the clarity is achieved through filtration.

a limpid fluid

Replaces 'clear' with 'limpid', a more formal synonym, and 'supernatant' with 'fluid', increasing the formality of the phrase.

a non-turbid liquid

Focuses on the lack of turbidity, directly indicating the clarity of the liquid.

a pure liquid extract

Specifies that the liquid is an extract and emphasizes its purity, implying clarity as a result of the extraction process.

FAQs

How is "a clear supernatant" typically obtained in a lab setting?

Typically, "a clear supernatant" is obtained through centrifugation, where a mixture is spun at high speed to separate solids from liquids. The liquid above the settled solids is the desired "clear supernatant".

What does the term "a clear supernatant" mean in scientific research?

In scientific research, "a clear supernatant" refers to the liquid portion of a sample that remains after the solid particles have been removed, often through centrifugation or settling. It indicates that the liquid is relatively free of suspended particles.

Is "a clear supernatant" always colorless?

"A clear supernatant" does not necessarily mean that the liquid is colorless. It means that the liquid is transparent and free of visible particles, but it can still have "a colored solution". For example, it might be slightly yellow or brown depending on the substances dissolved in it.

What are some applications of using "a clear supernatant" in experiments?

"A clear supernatant" can be used for various downstream applications such as protein quantification, enzymatic assays, or further purification steps. Ensuring the liquid is clear helps to prevent interference from particulate matter in these procedures.