Description
Return displaced volume and buoyancy-corrected mass.
Biochemical amounts, ionization and free energies depend on units, standard states, activities and molecular composition. A supplied concentration ratio or independent-group formula is one local model relation rather than a complete equilibrium or verified molecular characterization.
Return displaced volume and buoyancy-corrected mass.
When to use this tool
Use Protein Partial Specific Volume Factor when checking the stated biochemical amount, charge, equilibrium or material-basis convention.
How to use the tool and how it works
- Enter proteinMass, partialSpecificVolume, solventDensity. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read displacedVolume, buoyantMass. Use the output convention below.
Return displaced volume and buoyancy-corrected mass. Require nonnegative proteinMass, partialSpecificVolume and solventDensity; displacedVolume = mass*specificVolume, buoyantMass = mass*(1-density*specificVolume).1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| proteinMass | Protein Mass | Required. Finite number; minimum 0. |
| partialSpecificVolume | Displaced volume per protein mass; SI m³/kg. | Required. Finite number; minimum 0. |
| solventDensity | Solvent Density | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| displacedVolume | Displaced Volume | Required. Finite number. |
| buoyantMass | Signed mass*(1-solventDensity*partialSpecificVolume); can be negative. | Required. Finite number. |
{
"input": {
"proteinMass": 10,
"partialSpecificVolume": 0.7,
"solventDensity": 1
},
"output": {
"displacedVolume": 7,
"buoyantMass": 3.0000000000000004
}
}Limitations and assumptions
- Specific volume is volume per mass, not density; negative buoyant mass is retained and material properties are supplied.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use compatible standard states, verified chemical identity and an appropriate complete activity/speciation or measurement model for physical interpretation.
References
Similar or alternative tools
- Protein Mass Molarity Ratio
Return molar concentration from mass concentration.
- Diluted Absorbance Recovery Factor Tool
Calculate diluted absorbance recovery factor from explicit caller-supplied inputs.