Humic Acid Percentage Test – Dry Humates (Leonardite)
Quantify Humic Content in Dry Amendments Using a Standardized Method
Know the True Value of Your Leonardite-Based Inputs
Leonardite is a naturally oxidized form of lignite, rich in humified organic matter —but its humic acid content can vary widely depending on the source. Our Humic Acid Percentage Test for Dry Humates provides a precise, lab-verified measurement of humic acid (HA) content, ensuring your product meets expectations for potency, labeling, and agronomic value.
This test is performed using a recognized industry standard(non-CDFA) method specific to dry materials like leonardite and does not include pH analysis.
Why This Test Matters
- Verify Humic Acid Concentration in leonardite, dry humates, or powdered organic amendments
- Support QA/QC in product development and blending
- Ensure consistency across mining sources or batches
- Back up marketing claims with accurate, third-party data
- Assist buyers and suppliers in material comparison and purchase decisions
What’s Included in This Test
- % Humic Acid Content(HA) determined by the standard method for dry humates
- Applicable to leonardite, lignite-based materials, and humate powders
- No pH measurement included
Sample Requirements
- Minimum Sample Size: 1 cup (dry, finely ground material preferred)
- Packaging: Sealed and labeled bag or container
- Turnaround Time: Up to 5–7 business days from lab receipt
About Leonardite
Named after soil scientist A.G. Leonard, leonardite is an oxidized layer of lignite found near the surface of coal mines. Often containing 30–80% humic acid, it is widely used in agriculture as a natural soil amendment, compost enhancer, or input in the production of liquid humic extracts. Testing is essential to determine its true agronomic value.
Ideal For:
- Leonardite processors and suppliers
- Organic input manufacturers
- Soil amendment distributors
- Bulk buyers seeking quality verification
- Agronomists comparing dry humate sources
Order Your Humic Acid Percentage Test Today
Measure what matters. Know the real humic content of your leonardite and dry humates to ensure consistency, compliance, and credibility in your product line.
Frequently Asked Questions
- What are your business hours?
Our office is open Monday thru Friday from 8 am to 5 pm. We do close for major holidays, so we recommend ordering your testing and sending your sample early if a holiday is coming up. You can always reach us by email. Just send us a message at info@tpslab.com
- When will I get my results?
We understand that you need your results as soon as possible. That is why we make sure to begin processing your samples as soon as they arrive at our laboratory. When the results are ready, we will email them to the email address you provided on your submittal form. The list below will give you an idea of our usual turnaround times.
Soil Tests: 5-7 Business days
Water Tests: 5 - 7 Business days
Plants Tests: 24 - 48 Hours
Compost Tests: 7 - 14 Business days
Fertilizer Tests: 3 - 5 Business days
Heavy Metals Test: 7 - 14 Business days
We offer a rush option for an additional 50% of the testing cost, but we would encourage you to give yourself time to test before you get to a point where a rush is needed.
