Description
Subtract tare and blank, then divide by sample mass.
A food measurement can require calibration, recovery correction or a defined reference state. A corrected value or reporting envelope is only one analytical step and does not independently establish contamination status, shelf life or safety.
Subtract tare and blank, then divide by sample mass.
When to use this tool
Use Food Sample Blank Netmass Correction when you need the specified laboratory or bench-measurement term.
How to use the tool and how it works
- Enter gross, tare, blankResidue, sampleMass. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read netResidue, massFraction. Use the output convention below.
Require nonnegative gross, tare and blank residue and positive sample mass. Subtract tare and blank, then divide by sample mass.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| gross | Gross | Required. Finite number; minimum 0. |
| tare | Tare | Required. Finite number; minimum 0. |
| blankResidue | Blank Residue | Required. Finite number; minimum 0. |
| sampleMass | Sample Mass | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| netResidue | Net Residue | Required. Finite number. |
| massFraction | Mass Fraction Unit: 1. | Required. Finite number. |
{
"input": {
"gross": 12,
"tare": 10,
"blankResidue": 0.5,
"sampleMass": 5
},
"output": {
"netResidue": 1.5,
"massFraction": 0.3
}
}Limitations and assumptions
- Mass units must match. Negative residue/fraction is retained; the model does not estimate uncertainty, detection limits, contamination or safety.
- 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 a validated analytical method and the appropriate safety assessment. Review reference conditions, units, uncertainty, recovery and product-specific interpretation rather than inferring safety from a single number.
References
Similar or alternative tools
- Food Surface Wipe Sample Area Factor
Scale count by reference/sample area and divide by recovery for adjusted count.
- Forensic Lab Blank Correction Term
Subtract blank from sample signal and multiply by dilution divided by calibration slope.