Description
Calculate remaining-volume fraction and replacement-to-remaining ratio for one aliquot.
Pharmaceutical production records require explicit mass units, purity basis, sample-volume conventions and controlled dates. Mean form mass differs from active-content uniformity, while retest and expiry have different meanings. Supplied manufacturing terms do not establish quality, release, a preparation protocol or appropriate medication use.
Calculate remaining-volume fraction and replacement-to-remaining ratio for one aliquot.
When to use this tool
Use Dissolution Aliquot Replacement Factor when you already have vesselVolume, withdrawnAliquotVolume and need to calculate remaining-volume fraction and replacement-to-remaining ratio for one aliquot.
How to use the tool and how it works
- Enter vesselVolume, withdrawnAliquotVolume. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read remainingVolumeFraction, replacementToRemainingRatio. Use the output convention below.
Require vesselVolume>0 and withdrawn aliquot in [0,vessel); return 1-withdrawn/vessel and withdrawn/(vessel-withdrawn).1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| vesselVolume | Vessel Volume | Required. Finite number; strictly above 0. |
| withdrawnAliquotVolume | Nonnegative and strictly less than vesselVolume; complete withdrawal is rejected. | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| remainingVolumeFraction | 1-withdrawn/vessel, a single withdrawal term rather than cumulative dissolution correction. | Required. Finite number. |
| replacementToRemainingRatio | Replacement To Remaining Ratio | Required. Finite number. |
{
"input": {
"vesselVolume": 100,
"withdrawnAliquotVolume": 20
},
"output": {
"remainingVolumeFraction": 0.8,
"replacementToRemainingRatio": 0.25
}
}Limitations and assumptions
- Complete withdrawal is rejected. This is one volume term, not a cumulative dissolution correction, mass balance or prescribed laboratory procedure.
- 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 the original batch, assay, reference-material and stability records with the complete controlled method. Reconcile sampling and unit bases before combining local terms; one mass fraction or date comparison does not validate product quality or authorize release.
References
Similar or alternative tools
- Pharmaceutical Reference Purity Factor
Calculate pure-equivalent reference mass using a supplied purity fraction.
- Dosage Form Active Weight Fraction
Calculate supplied active mass as a fraction of total dosage-form mass.