Examples
Examples
Try the starting example
- A260 reading
- 1
- A280 reading
- 0.55
- A230 reading
- 0.5
- Common blank absorbance
- 0.02
- Blank-adjusted A260/A280
- 1.849057
- Blank-adjusted A260/A230
- 2.041667
- Adjusted absorbances
- [0.98,0.53,0.48]
Try another scenario
- A260 reading
- 1.1
- A280 reading
- 0.55
- A230 reading
- 0.5
- Common blank absorbance
- 0.02
- Blank-adjusted A260/A280
- 2.037736
- Blank-adjusted A260/A230
- 2.25
- Adjusted absorbances
- [1.08,0.53,0.48]
Calculation method
Calculation method
Blank-adjusted A260/A280
(A260−blank)/(A280−blank).
Blank-adjusted A260/A230
(A260−blank)/(A230−blank).
Adjusted absorbances
Raw adjusted readings; ratios alone do not prove sample purity.
Symbols and units
- a
- A260 reading
- b
- A280 reading
- c
- A230 reading
- d
- Common blank absorbance
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Absorbance readings, blank corrections. Returns Ratios and raw-data checks; no universal pass claim. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. A260 reading: minimum None, maximum 1000000000000.0. A280 reading: minimum None, maximum 1000000000000.0. A230 reading: minimum None, maximum 1000000000000.0. Common blank absorbance: minimum None, maximum 1000000000000.0.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.