Description
Supply recovered and expected in the same amount unit and on the same analytical basis.
Mass-based environmental quantities depend on their basis: gross versus tare-corrected mass, wet versus dry solids, or material versus void volume. A ratio or density conversion is meaningful only when those bases and units agree.
Supply recovered and expected in the same amount unit and on the same analytical basis.
When to use this tool
Use Sample Recovery Fraction when reconciling supplied environmental masses, solids fractions or material volumes.
How to use the tool and how it works
- Enter recovered, expected. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read fraction. Use the output convention below.
Require positive expected and return fraction = recovered/expected. Supply recovered and expected in the same amount unit and on the same analytical basis. The output is a ratio; 1 means the recovered amount equals the expectation.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| recovered | Signed recovered amount in the same unit as expected; may exceed expected. | Required. Finite number. |
| expected | Expected | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| fraction | Dimensionless ratio under the stated denominator convention; not multiplied by 100. | Required. Finite number. |
{
"input": {
"recovered": 8,
"expected": 10
},
"output": {
"fraction": 0.8
}
}Limitations and assumptions
- Recovered is a finite signed number and is not restricted to [0,expected]. Negative recovery or recovery above one is returned without diagnosis; no laboratory recovery acceptance band or uncertainty is 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 measured density, method-specific moisture procedures and uncertainty analysis where simple homogeneous-material assumptions are insufficient.
References
Similar or alternative tools
- Particulate Filter Tare Mass Balance
Return netMass = loadedMass-tareMass-blankCorrection and concentration = netMass/sampledVolume.
- Sample Detection Limit Dilution Adjustment
Apply an explicit analytical dilution factor to a detection limit on the same concentration basis without changing censored observations.