Description
Multiply dilution factors, predict final volume, and return recorded-minus-expected volume plus final concentration*volume-source concentration*aliquot mass residual.
Soil and plant analytical results depend on sample mass, extraction volume, dilution, blanks and dry-matter basis. Concentration in an extract is distinct from analyte mass per soil mass or an inventory per field area. A unit conversion does not convert between analytical methods or establish nutrient availability.
Multiply dilution factors, predict final volume, and return recorded-minus-expected volume plus final concentration*volume-source concentration*aliquot mass residual.
When to use this tool
Use Soil Extract Dilution Residual when checking the stated benign analytical concentration, inventory or calibration basis.
How to use the tool and how it works
- Enter sourceConcentration, sourceAliquotVolume, dilutionFactors, recordedFinalConcentration, recordedFinalVolume. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read recordedDilutionFactor, expectedFinalVolume, volumeResidual, massResidual. Use the output convention below.
Require positive source aliquot, nonnegative recorded final volume and dilution factors>=1. Multiply dilution factors, predict final volume, and return recorded-minus-expected volume plus final concentration*volume-source concentration*aliquot mass residual.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| sourceConcentration | Source Concentration | Required. Finite number. |
| sourceAliquotVolume | Source Aliquot Volume | Required. Finite number; strictly above 0. |
| dilutionFactors | Dilution Factors | Required. Array of finite number; maximum items 256. |
| recordedFinalConcentration | Recorded Final Concentration | Required. Finite number. |
| recordedFinalVolume | Recorded Final Volume | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| recordedDilutionFactor | Recorded Dilution Factor | Required. Finite number. |
| expectedFinalVolume | Expected Final Volume | Required. Finite number. |
| volumeResidual | Volume Residual | Required. Finite number. |
| massResidual | Recorded final concentration*volume minus source concentration*source aliquot; signed analyte mass. | Required. Finite number. |
{
"input": {
"sourceConcentration": 20,
"sourceAliquotVolume": 2,
"dilutionFactors": [
2,
5
],
"recordedFinalConcentration": 2.1,
"recordedFinalVolume": 20
},
"output": {
"recordedDilutionFactor": 10,
"expectedFinalVolume": 20,
"volumeResidual": 0,
"massResidual": 2
}
}Limitations and assumptions
- Concentrations may be signed; compatible concentration/volume units are required. This audits supplied records rather than proving material conservation experimentally.
- 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 verified laboratory methods, compatible units and qualified laboratory/agronomic assessment for actual analytical interpretation, chemical handling or field management.
References
Similar or alternative tools
- Soil Extract Mass Volume Factor
Return concentration*extractVolume/sampleMass.
- Soil Phosphorus Extract Unit Crosswalk
Return reading*unitFactor*extractVolume/sampleMass.