How to choose humic acid
A neutral five-step checklist for evaluating humic acid products: define the use case, match the form, read the specification, request a COA and review consistency.
- 01
Define the use case
Clarify the application method—soil, fertigation, foliar or another programme—and the rest of the programme before comparing products.
- 02
Match the physical form
Choose powder, granule, flake or liquid based on handling and how the product will be dosed or applied.
- 03
Read the specification
Compare content figures, moisture, pH, source material and particle size on a like-for-like basis.
- 04
Request a COA
Ask for a batch Certificate of Analysis and check test methods, dates and any stated heavy-metal screening.
- 05
Confirm consistency
Where possible, review COAs across batches to understand how consistent a supplier's material is over time.
This is general guidance, not a recommendation of a specific product or supplier. Actual outcomes depend on the material, soil, crop, rate and management; local trials and agronomic advice remain important.