Description
Return gap = sampleSignal-blankSignal*suppliedMultiplier and aboveBoundary = sampleSignal > blankSignal*suppliedMultiplier.
Environmental measurements can require background subtraction, recovery correction, calibration or a common reference basis. Corrected values can be signed; a numerical correction is separate from detection, analytical validity and health interpretation.
Return gap = sampleSignal-blankSignal*suppliedMultiplier and aboveBoundary = sampleSignal > blankSignal*suppliedMultiplier.
When to use this tool
Use Environmental Blank Qualification Gap when checking a supplied measurement correction, comparison or calibration term.
How to use the tool and how it works
- Enter sampleSignal, blankSignal, suppliedMultiplier. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read gap, aboveBoundary. Inspect aboveBoundary before interpreting the associated values.
Require nonnegative blankSignal and suppliedMultiplier. Return gap = sampleSignal-blankSignal*suppliedMultiplier and aboveBoundary = sampleSignal > blankSignal*suppliedMultiplier. Signals must share a unit; the multiplier is dimensionless.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| sampleSignal | Sample Signal | Required. Finite number. |
| blankSignal | Blank Signal | Required. Finite number; minimum 0. |
| suppliedMultiplier | Supplied Multiplier | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| gap | Signed first or corrected value minus the stated reference, on their common unit basis. | Required. Finite number. |
| aboveBoundary | Above Boundary | Required. Boolean. |
{
"input": {
"sampleSignal": 15,
"blankSignal": 3,
"suppliedMultiplier": 4
},
"output": {
"gap": 3,
"aboveBoundary": true
}
}Limitations and assumptions
- Equality is not above the boundary. sampleSignal may be signed, and the caller's multiplier does not become an authoritative reporting or detection rule through this calculation.
- 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 relevant analytical method, quality-control records and uncertainty model before classifying a corrected measurement.
References
Similar or alternative tools
- Drinking Water Sampler Blank Share
Return correctedSignal = sampleSignal-blankSignal.
- Environmental Sample Holding Time Explicit Gap Tool
Calculate environmental sample holding time explicit gap from explicit caller-supplied inputs.