// multi-utility computation suite · offline · instant · precise
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│ [c] calcalyst_ │
│ computation suite │
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sci.standard-addition-method Calculator
Calculates analyte concentration using the standard addition method, which corrects for matrix suppression in complex sample matrices. Standard addition is used when matrix effects prevent simple external calibration — the analyte signal in the unknown serves as the y-intercept; added standards give the slope.
Inputs
Signal Sample
Reference formula or conversion factor shown for context.
Signal Spiked
Reference formula or conversion factor shown for context.
Spike Volume Ml
Three-dimensional space occupied (m³ or L). 1 m³ = 1,000 L.
Sample Volume Ml
Three-dimensional space occupied (m³ or L). 1 m³ = 1,000 L.
Spike Concentration
Amount of solute per unit volume. Higher concentration = more solute dissolved.
Results
unknown concentration (mg/L)
The proportional relationship between two quantities.
spike recovery check
A pass/fail verification against the applicable code, standard, or threshold.
added spike concentration
The proportional relationship between two quantities.
C = S0 × Cs × Vs / [(S1-S0)(V0+Vs)]
Reference formula or conversion factor shown for context.
advantage
Sample size or count used in the calculation.
spike recovery target
Reference formula or conversion factor shown for context.