Super Potassium Humate is the potassium salt of humic acids extracted from the highest-grade oxidized Leonardite. This product belongs to the premium “Super Grade” category — the highest quality segment currently available on the global market — achieved through advanced cold alkaline extraction combined with micro-filtration (0.1 µm membrane) and instant drying technology (spray-drying or flash-drying).
The product is presented in distinctive shiny flakes or shiny crystals with a metallic sheen. When dissolved, it forms a clear, deep dark-brown solution with no precipitation or flocculation, even when mixed with high-hardness liquid fertilizers.
1. General Information
Chemical Nature: Potassium salt of Humic Acids derived from high-grade Leonardite
Appearance: Shiny black flakes / shiny crystals / ultra-fine powder
Grade: Super (highest solubility and humic acid content)
2. Typical Chemical Analysis (Dry Basis)
Parameter
Specification (Super Grade)
Typical Value
Humic Acid (dry basis)
≥ 70%
70–80%
Fulvic Acid (dry basis)
5–15%
10–15%
Potassium (as K₂O)
≥ 12%
12–14%
Solubility in water
≥ 99%
99.5–100%
pH (1% solution)
9.0–11.0
9.5–10.5
Moisture
≤ 10%
6–8%
Particle size (flakes/crystals)
1–5 mm
2–4 mm
Particle size (powder)
80–200 mesh
100–150 mesh
3. Physical Properties
Property
Description / Value
Form
Shiny flakes, shiny crystals or powder
Color
Jet black with metallic sheen
Odor
Odorless
Bulk Density
0.65–0.78 g/cm³ (flakes)
Water Solubility
100% soluble (clear dark brown solution)
Anti-flocculation limit
> 500 meq/L (excellent hard-water resistance)
4. Key Performance Advantages
Feature
Super Potassium Humate
Standard Potassium Humate
Humic Acid content
≥ 70%
50–65%
Solubility
99–100%
85–95%
Fulvic Acid content
Higher (10–15%)
Lower (≤ 5%)
Appearance
Shiny flakes/crystals
Dull flakes/powder
Performance in foliar & fertigation
Superior chelation & uptake
Moderate
5. Applications & Recommended Dosage
Application Method
Recommended Dosage
Soil application
5–15 kg/ha (broadcast or banding)
Drip / Fertigation
2–6 kg/ha split in 3–5 applications
Foliar spray
200–500 g/1000 L water (0.02–0.05%)
Seed treatment
0.5–1.0% solution soaking or coating
Root dipping
0.1–0.2% solution
6. Functions & Benefits
Powerful soil conditioner and structure improver
Increases cation exchange capacity (CEC)
Enhances nutrient uptake (especially N, P, K and micronutrients)
Strong chelating agent for microelements (prevents fixation)
Stimulates root development and microbial activity
Improves water retention and reduces drought stress
Buffers soil pH and reduces salinity effects
100% compatible with most fertilizers and pesticides
