Pesticide Residue PPM Checker
Maximum Residue Limits (MRLs) are set per pesticide per crop — 2 PPM might be fine on one crop and illegal on another. Enter your residue PPM to check against typical MRL bands.
Calculator
Pesticide Residue PPM Checker
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Maximum Residue Limits (MRLs) are set per pesticide per crop — 2 PPM might be fine on one crop and illegal on another. Enter your residue PPM to check against typical MRL bands.
How to use this calculator
- Enter residue PPM.
- Note the pesticide and crop.
- Compare with the MRL.
The formula
Comparison against published MRL values (check current Codex/EU/USDA tables).
What the units mean
PPM (parts per million) — one part of solute per million parts of the total mixture. The workhorse unit for trace concentrations in water, air, and food.
Worked example
Residue 1.5 PPM vs MRL 2 PPM → compliant; vs MRL 0.5 → rejected.
Quick reference
| Situation | Guidance |
|---|---|
| Below MRL | Compliant |
| Above MRL | Rejected / do not ship |
Always check the current MRL table.
Where you will actually use this
Export markets reject shipments over MRL — testing before shipping saves the load.
- Export compliance
- GAP programs
- Market surveillance
Mistakes that give wrong answers
- Using the wrong crop's MRL
- Old MRL tables
Key takeaways
- Formula: MRL comparison for pesticide residues
- Remember: Always check the current MRL table.
- Watch out for: Using the wrong crop's MRL
- Next step: run your own numbers in the calculator above, then verify with a measurement — calculated values are only as good as the inputs.
Frequently asked questions
What is an MRL?
Maximum Residue Limit — the legal maximum pesticide residue on a food crop.