Ultramicronised leonardite
BLACK-S
Acidic suspension
High-solids soil suspension
Non-alkaline-extracted leonardite suspension targeting D₉₀ ≤ 5 µm for soil and root-zone use.
Request product informationPRODUCT OVERVIEW
Designed as part of a complete soil system.
BLACK-S keeps ultramicronised leonardite in a high-solids aqueous suspension without alkaline extraction. It carries the native mineral-humic matrix to soil programs where controlled agitation and filtration compatibility are available.
FORMULATION CONTENT
- Ultramicronised natural leonardite
- Native humic, fulvic and humin fractions
- Aqueous acidic suspension system
TECHNICAL PROFILE
What the product is—and how it is delivered.
Values shown here describe the current product architecture. Guaranteed analysis is issued on the final registered market label.
DESIGN PRIORITIES
What it is built to deliver.
- Whole native mineral-humic matrix
- Ultrafine particle contact
- High-solids liquid handling
- Soil and root-zone positioning
PRIMARY APPLICATIONS
Soil drench
Root-zone programs
Compatible irrigation routes
Application rates depend on crop, soil analysis, irrigation infrastructure and local registration. Final dose tables will be issued with validated technical documentation.
APPLICATION METHOD
Build it into the program.
Agitate or recirculate before dilution
Review filtration before irrigation injection
Use as a soil-directed product, not a clear solution
PRODUCT SELECTION GUIDE
Ultramicronised leonardite suspension
BLACK-S is a high-solids suspension, not a clear potassium-humate solution. It carries an ultrafine natural mineral-humic matrix into soil-directed programs where continuous agitation, suitable filtration and emitter review are available.
Choose this route when
- The natural mineral-humic matrix is required in a pumpable suspension.
- The system can maintain agitation or recirculation during dosing.
- Soil and root-zone delivery is preferred over a clear foliar solution.
Verify before purchase or use
- Particle-size distribution and sedimentation behaviour
- Agitation energy, filter mesh and emitter passage
- Tank-mix stability and cleaning procedure after dosing
FREQUENTLY ASKED QUESTIONS
Technical questions about BLACK-S
Is BLACK-S a completely water-soluble product?
No. It is an ultramicronised natural-leonardite suspension. The solid phase must remain suspended and its compatibility with filters and emitters must be checked.
Why must BLACK-S be agitated before and during use?
Suspended mineral particles can settle over time. Controlled agitation or recirculation helps maintain a representative concentration during dilution and dosing.
Can BLACK-S replace K18?
They are different product routes. BLACK-S is a high-solids natural suspension; K18 is an alkaline liquid potassium-humate concentrate. Selection depends on the objective and application hardware.
APPLICATION GUIDES
Where BLACK-S fits into the field.
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A technical guide to distinguishing oxidized leonardite from ordinary lignite and qualifying each raw-material lot through representative sampling, moisture, ash, sulfur, extractable humic fractions, particle size and contaminant controls.
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COMPATIBILITY BELONGS TO THE COMPLETE MIXTURECan Potassium Humate Be Tank-Mixed? Calcium, Phosphate and Jar-Test Guide
A technical decision guide for testing potassium humate with calcium, phosphate, sulfate, acids, micronutrients and pesticides in the actual irrigation water.
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A PERCENTAGE IS MEANINGFUL ONLY WITH ITS METHOD AND BASISHow to Read a Humic Acid Analysis: ISO 19822, Dry Basis, Ash and CoA
A laboratory-focused guide to ISO 19822, operational humic fractions, as-received and dry-basis results, ash correction, sampling and lot-specific CoA review.
Read the technical articleDARK LIQUIDS ARE NOT ONE PRODUCT CLASSLiquid Humic Acid or Leonardite Suspension? A Guide to Solution, D₉₀ and Filtration
A technical guide to distinguishing dissolved potassium humate liquids from micronised leonardite suspensions through extraction route, D₉₀, dry matter, sedimentation, redispersibility and filtration testing.
Read the technical articleCOMMERCIAL & TECHNICAL INQUIRY