AquaVerify

Chemical species converter

Convert nutrient reporting forms such as nitrate to nitrate-nitrogen.

Chemical species converter

Formula

target = source x MWtarget / MWsource

Variables and units

  • NO3, NO3-N
  • PO4, PO4-P
  • NH4, NH4-N
  • NO2, NO2-N
  • mg/L, µg/L

Worked example

Example: 10 mg/L NO3 gives about 2.259 mg/L NO3-N.

10 mg/L NO3 is approximately 2.259 mg/L NO3-N.

How to read the result

Uses versioned molar mass ratios and does not compare with legal limits.

Validation rules

Inputs must be finite, compatible and within calculation limits. Denominators cannot be zero.

Warnings

This calculator is an educational and workflow aid. It does not replace a validated method, SOP, accreditation decision or regulatory interpretation.

Private by design

Inputs and results stay in your browser. AquaTools Free does not send calculation values to AquaVerify servers.

Sources

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AquaVerify Cloud

Move from a one-off calculation to controlled sample, method and report workflows in AquaVerify Cloud.

FAQ

Are my inputs stored?

Inputs and results stay in your browser. AquaTools Free does not send calculation values to AquaVerify servers.

Can I use this as an official method record?

This calculator is an educational and workflow aid. It does not replace a validated method, SOP, accreditation decision or regulatory interpretation.

Where do saved calculations live?

AquaVerify Cloud keeps the governed workflows: saved calculations, history, traceability, ELN, LIMS review, reports and collaboration.