Description
Report explicitly supplied volume expansion with a separate blank correction.
Botanical laboratory records distinguish wet mass, dry matter, carriers, extract mass, and assay response. A fraction or reference comparison depends on the chosen material basis and supplied analytical method. Voucher and monograph metadata help identify records but do not themselves authenticate a specimen or establish product quality.
Report explicitly supplied volume expansion with a separate blank correction.
When to use this tool
Use Pharmacognosy Swelling Index Volume Term when you need this mass-basis, assay-response, extraction, or source-record calculation for supplied laboratory data.
How to use the tool and how it works
- Enter initialVolume, finalVolume, dryMass, blankExpansion. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read netExpansion, expansionPerMass, finalVolumePerMass. Use the output convention below.
For positive dryMass and nonnegative initialVolume, finalVolume, and blankExpansion return netExpansion=finalVolume-initialVolume-blankExpansion, expansionPerMass=netExpansion/dryMass, and finalVolumePerMass=finalVolume/dryMass.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| initialVolume | Initial Volume | Required. Finite number; minimum 0. |
| finalVolume | Final Volume | Required. Finite number; minimum 0. |
| dryMass | Dry Mass | Required. Finite number; strictly above 0. |
| blankExpansion | Blank Expansion | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| netExpansion | Net Expansion | Required. Finite number. |
| expansionPerMass | Blank-corrected volume expansion per dry-mass unit; can be negative. | Required. Finite number. |
| finalVolumePerMass | Final Volume Per Mass | Required. Finite number. |
{
"input": {
"initialVolume": 2,
"finalVolume": 10,
"dryMass": 4,
"blankExpansion": 0.5
},
"output": {
"netExpansion": 7.5,
"expansionPerMass": 1.875,
"finalVolumePerMass": 2.5
}
}Limitations and assumptions
- Volumes need one unit and the two per-mass outputs use the dryMass unit. Negative net expansion is allowed; the tool does not establish a compendial swelling-test method or product compliance.
- 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. Signed zero is exported as zero.
Alternative or Complementary methods
Use the appropriate authenticated reference material, analytical protocol, and source records for a full laboratory assessment. Verify moisture basis, response factors, and extract/carrier definitions before comparing results.
References
Similar or alternative tools
- Essential Oil Reference Volume Factor
Convert supplied mass/density and explicit volume bases without recommending essential-oil use.
- Pharmacognosy Ash Value Tare Factor
For positive sampleMass, nonnegative crucibleMass, crucibleAshMass>=crucibleMass, and moistureFraction in [0,1), return ashMass=crucibleAshMass-crucibleMass, asReceivedFraction=ashMass/sampleMass, and dryFraction=ashMass/(sampleMass*(1-moistureFraction)).