at different concentration vs in different concentration

Both "at different concentration" and "in different concentration" are commonly used phrases in English. They are both correct, but the choice between them depends on the context in which they are used. "At different concentration" is typically used when referring to specific points or levels of concentration, while "in different concentration" is used when discussing the overall composition or mixture of substances.

Last updated: March 30, 2024 • 1817 views

at different concentration

This phrase is correct and commonly used in English.

This phrase is used when referring to specific points or levels of concentration. It indicates the particular concentration at which something is being measured or observed.

Examples:

The enzyme activity was measured at different concentrations of the substrate.
The drug showed varying effects at different concentrations.

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Reproducibility at different concentration levels to be shown
An EC50 value is calculated from determinations at different concentrations.
I was timing to see how fast the acid would eat through the baggies at different concentrations.
Several market surveys, referred to in the Annex XV dossier, identified the presence of NPE in textile articles, at different concentrations.
to enable satisfactory statistical modelling, the test should include at least one control tank and five additional tanks at different concentrations.
Some substances (acids, bases, etc.) are placed on the market in aqueous solutions at various concentrations and, therefore, these solutions require different classification and labelling since the hazards vary at different concentrations.
At least two different concentrations of test substance should be used in order to determine the degradation kinetics.
In some cases, it would be advisable to run parallel series of test chemical at two different concentrations, for example, 2 and 5 mg/litre.
involves comparison of the rate of evaporation of a pure solvent aerosol to at least three aerosols containing the polymer at different concentrations (1)(2)(4).
At least two different concentrations of test substance differing by a factor of 5 to 10 should be used in order to determine degradation kinetics and calculate the kinetic degradation rate constant.
At least five different analysable concentrations of the test substance should be used with approximately half log (i.e. [radic]10) intervals between test points for an initial experiment.
Some chemicals may be inhibitory at these concentrations, while the kinetics of removal of others may be different at low concentrations.
Judith's remains show trace evidences of the same compounds, but in different concentrations.
I just finished testing hydrochloric acid on some bone, all different concentrations.
I just finished testing hydrochloric acid on some bone, all different concentrations.
Apply 8 different concentrations of the test chemical.
The general experimental design entails exposing stage 51 Xenopus laevis tadpoles to a minimum of three different concentrations of a test chemical and a dilution water control for 21 days.
Different concentrations result in different percentages of Daphnia being no longer capable of swimming at the end of the test.
Adult earthworms of the species Eisenia foetida (see note in Appendix) are kept in a defined artificial soil treated with different concentrations of the test substance.
Exponentially growing plant cultures of the genus Lemna are allowed to grow as monocultures in different concentrations of the test substance over a period of seven days.

Alternatives:

at various concentrations
at different levels of concentration
at diverse concentrations
at distinct concentrations
at separate concentrations

in different concentration

This phrase is correct and commonly used in English.

This phrase is used when discussing the overall composition or mixture of substances. It indicates that there are variations in the concentration of a substance within a mixture.

Examples:

The samples were prepared in different concentrations of the reagent.
The solution was found to be stable in different concentrations of the solvent.

Show examples from the web [+]

Judith's remains show trace evidences of the same compounds, but in different concentrations.
Exponentially growing plant cultures of the genus Lemna are allowed to grow as monocultures in different concentrations of the test substance over a period of seven days.
Exponentially growing plant cultures of the genus Lemna are allowed to grow as monocultures in different concentrations of the test chemical over a period of seven days.
During the clinical trials, pigs were only fed with medicated feedingstuff containing valnemulin in different concentrations (depending on the disease) for up to 4 weeks (depending on the disease).
The method described assesses the effect of a test substance on micro-organisms by measuring the respiration rate under defined conditions in the presence of different concentrations of the test substance.
Different concentrations result in different percentages of Daphnia being no longer capable of swimming at the end of the test.
An EC50 value is calculated from determinations at different concentrations.
I just finished testing hydrochloric acid on some bone, all different concentrations.
I just finished testing hydrochloric acid on some bone, all different concentrations.
At least two different concentrations of test substance should be used in order to determine the degradation kinetics.
Apply 8 different concentrations of the test chemical.
Reproducibility at different concentration levels to be shown
I was timing to see how fast the acid would eat through the baggies at different concentrations.
Several market surveys, referred to in the Annex XV dossier, identified the presence of NPE in textile articles, at different concentrations.
The general experimental design entails exposing stage 51 Xenopus laevis tadpoles to a minimum of three different concentrations of a test chemical and a dilution water control for 21 days.
Adult earthworms of the species Eisenia foetida (see note in Appendix) are kept in a defined artificial soil treated with different concentrations of the test substance.
In some cases, it would be advisable to run parallel series of test chemical at two different concentrations, for example, 2 and 5 mg/litre.
Under otherwise identical test conditions, and an adequate range of test substance concentrations, different concentrations of a test substance exert different average degrees of effect on the swimming ability of Daphnia.
This process is repeated at 15-minute intervals with different volumes of the test substance stock solution to give a series of vessels containing different concentrations of the test substance.
If you look in this direction and you look in should see two entirely different concentrations of matter... different it's extremely uniform.

Alternatives:

in various concentrations
in different levels of concentration
in diverse concentrations
in distinct concentrations
in separate concentrations

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at different concentration vs in different concentration