Measure unsaturation from titration volumes and masses. Validate blanks and compare quality across production batches. Visualize results clearly before exporting polished records for documentation.
This page uses a single column page structure. The form itself shifts to three columns on large screens, two on medium screens, and one on mobile.
The standard factor 12.69 converts the titration difference into grams of iodine absorbed per 100 grams of sample under the common iodine value calculation format.
Add the sample name, method, normality, correction factor, and sample mass. Use active fraction when the tested portion is not fully oil or fat.
Enter the blank volume and one to three sample volumes. Replicates improve reliability and allow standard deviation and RSD calculations.
Use moisture and active fraction fields when you need dry basis reporting or mass correction for mixtures, blends, or diluted products.
The page shows the final result above the form, adds a replicate table, and draws a Plotly chart for quick visual comparison.
Use the CSV button for spreadsheets and the PDF button for a printable report with summary values and replicate details.
| Sample | Mass (g) | Blank (mL) | Sample (mL) | Normality | Approx. IV |
|---|---|---|---|---|---|
| Sunflower oil | 0.200 | 24.80 | 5.90 | 0.100 | 119.92 |
| Olive oil | 0.250 | 24.80 | 7.70 | 0.100 | 86.80 |
| Coconut oil | 0.500 | 24.80 | 20.40 | 0.100 | 11.17 |
These rows are reference examples only. Actual values depend on method execution, reagent quality, and sample preparation.
Iodine value estimates the degree of unsaturation in oils and fats. Higher values usually indicate more double bonds and a greater tendency toward oxidation or drying behavior.
The blank shows total reagent consumption without the sample. Subtracting the sample reading isolates the iodine actually absorbed by double bonds in the tested material.
Use it when your weighed portion is a blend, emulsion, or diluted preparation. It corrects the mass used in the equation so the result reflects the real active oil fraction.
Negative iodine values usually mean the sample titration volume exceeded the blank. That often points to input errors, poor endpoint detection, or unsuitable titration data.
Wet basis suits direct test reporting. Dry basis is useful when moisture varies across batches and you need a better composition comparison between samples.
At least two replicates are helpful, while three are better for spotting drift and estimating precision. More consistent replicates improve confidence in the reported average.
This calculator uses the common factor format for iodine value calculations. If your laboratory method requires a modified constant, switch to the custom factor option.
No. It supports reporting and checking calculations, but accredited work still needs validated procedures, proper reagent standardization, instrument control, and documented laboratory review.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.