Description
Return one base-count extinction and absorbance contribution.
Optical and coupled-assay signals depend on blank subtraction, path length, dilution, calibration and linearity. A corrected ratio or local response slope can be calculated without establishing assay specificity, actual concentration or a biological/clinical result.
Return one base-count extinction and absorbance contribution.
When to use this tool
Use Nucleotide Extinction One Base Term when checking the stated biochemical optical or response-correction convention.
How to use the tool and how it works
- Enter count, extinctionPerBase, concentration, pathLength. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read extinctionContribution, absorbanceContribution. Use the output convention below.
Return one base-count extinction and absorbance contribution. Require whole count >= 0 and nonnegative extinction, concentration and pathLength; extinctionContribution = count*perBase, absorbance multiplies concentration and path.1
Beer-Lambert proportionality assumes an appropriate homogeneous optical medium, concentration and path basis. Blank subtraction alone does not verify these conditions or remove scattering effects.2
| Input field | Meaning and units | Accepted input |
|---|---|---|
| count | Count | Required. Safe integer; minimum 0. |
| extinctionPerBase | Extinction Per Base | Required. Finite number; minimum 0. |
| concentration | Concentration | Required. Finite number; minimum 0. |
| pathLength | Path Length | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| extinctionContribution | Extinction Contribution | Required. Finite number. |
| absorbanceContribution | Absorbance Contribution | Required. Finite number. |
{
"input": {
"count": 10,
"extinctionPerBase": 10000,
"concentration": 0.000001,
"pathLength": 1
},
"output": {
"extinctionContribution": 100000,
"absorbanceContribution": 0.09999999999999999
}
}Limitations and assumptions
- This assumes an additive coefficient contribution; nearest-neighbor effects, sequence context and actual absorbance calibration are omitted.
- 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 calibrated measurements and an appropriate validated assay model, including interference, linearity and uncertainty, for substantive concentration or biological conclusions.
References
-
Calculation and input contract: biochemistry/nucleotide-extinction-one-base-term — tool.io
-
Beer-Lambert law — IUPAC Gold Book
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