Use this oenology calculation to document or plan a defined fermentation, blending, adjustment, stabilization, aging, packaging, sensory, or cellar operation from measured wine parameters.

DAP dose (mg/L)

DAP added per liter of must.

Nitrogen content (%)

Elemental nitrogen mass fraction stated for the DAP product.

Convert a diammonium phosphate dose into its yeast assimilable nitrogen contribution. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Nitrogen contribution (mg/L)

YAN supplied by the DAP addition.

• Wine chemistry and microbiology depend on temperature, pH, alcohol, sugar, matrix, measurement method, microbial state, legal limits, product formulation, and bench-trial response. Generic doses and thresholds are not production instructions for every wine.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Confirm measurements with calibrated winery methods, run scaled bench trials, record additions and lot volumes, check local regulations and supplier specifications, and obtain professional laboratory advice for faults or stability risks.

• Yeast Nutrient Grams per hL Calculator

  Convert a yeast-assimilable-nitrogen gap into nutrient grams per hectoliter using the measured or manufacturer-stated YAN contribution for the exact nutrient product.

• Ascorbic Acid Complement Dose Calculator

  Convert a user-selected ascorbic-acid treatment rate in milligrams per liter into total grams for a wine lot; determine the rate from an appropriate treatment plan rather than this arithmetic tool.

• Bentonite Fining Dose Calculator

  Convert a bench-trial or treatment-plan bentonite rate in grams per liter into kilograms of dry bentonite for the selected wine volume.