Highly Soluble Potassium Fulvate Flake with 55% Humic Acid ≥50% Fulvic Acid and 100% Water Soluble
Product Description:
Potassium Fulvate Flake is a high-performance, water-soluble organic compound extracted from premium Leonardite—an oxidized lignite coal abundant in humic substances. Unlike low-grade humic acid products, our flakes undergo a rigorous, chemical-free purification process that eliminates heavy metals (lead, arsenic, mercury), toxins, and inert impurities. The result is a pure, golden-brown flake with ≥98% organic matter content and ≥12% potassium (K₂O). This makes it safe for all crops—from edible vegetables and fruits to ornamentals and hydroponic greens—and ideal for commercial farmers, hydroponic growers, and home gardeners seeking sustainable, high-yield growing solutions. Whether you’re tackling poor soil fertility, nutrient waste, or plant stress, our Potassium Fulvate Flake delivers proven, visible results to elevate your growing game.
Technical Parameters:
Potassium Fulvate Flake
CAS: 479-66-3
HS: 31059090
Standard:HG/T 5334-2018
| Item | Indicators |
| TypeⅠ | TypeⅡ | Type Ⅲ |
| Humic Acid (dry basis) | ≥55% | ≥60% | ≥60% |
| Fulvic Acid (dry basis) | ≥50% | ≥35% | ≥20% |
| Organic matter (dry basis) | ≥75% | ≥75% | ≥75% |
| Potassium (K2O dry basis) | 8%, 10%, 12% | 8%, 10%, 12% | 8%, 10%, 12% |
| Water Solubility | 100% | 100% | 100% |
| pH | 9-11 | 9-11 | 9-11 |
| Moisture | ≤15% | ≤15% | ≤15% |
| Size | 1-2mm 2-4mm | 1-2mm | 1-2mm |
Applications:
Designed for versatility, our Potassium Fulvate Flake integrates seamlessly into all growing setups, making it a go-to choice for diverse users:
1. Field Crops: Ideal for cereals (wheat, corn), vegetables (tomatoes, peppers), and fruit trees (apple, citrus). It builds long-term soil fertility and supports high-yield harvests.
2. Hydroponics & Indoor Growing: Compatible with NFT, DWC, and ebb-and-flow systems. It mixes easily into nutrient solutions without clogging lines, ensuring even nutrient distribution for leafy greens, herbs, and flowering plants.
3. Ornamentals & Landscaping: Perfect for roses, succulents, and landscape shrubs. Enhances flower color, fragrance, and overall plant fullness.
4. Organic Farming: Meets strict organic certification requirements, making it safe for crops sold in organic markets or to eco-conscious consumers.
Step-by-Step Product Usage Methods:
1. Soil Drenching (For Potted/Field Plants):
Mix 1–2 grams of flakes per 1 liter of water (use room-temperature water for faster dissolution)；
Stir until fully dissolved (no sediment remains)；
Apply directly to the root zone of plants—avoid wetting leaves to prevent fungal issues；
Use every 2–4 weeks during the growing season (reduce frequency to once monthly in dormant periods).
2. Foliar Spray (For Quick Nutrient Boosts):
Dilute 0.5–1 gram of flakes per 1 liter of water；
Stir thoroughly to create a clear solution；
Spray evenly on both sides of leaves—apply in early morning or late afternoon to avoid sunburn；
Use every 1–2 weeks when plants show nutrient deficiency signs (e.g., yellowing leaves) or during high-stress periods (heatwaves, drought).
3. Hydroponic Systems:
Add 0.3–0.5 grams of flakes per 1 liter of nutrient solution；
Mix until dissolved, then circulate into the hydroponic system；
Refresh the solution (with added flakes) every 7–10 days, as per your system’s regular maintenance schedule.
4. Seed Treatment (For Stronger Seedlings):
Create a 0.2% solution: Mix 0.2 grams of flakes per 100 milliliters of water；
Soak seeds in the solution for 4–6 hours (do not exceed 8 hours to avoid over-saturation)；
Plant seeds as usual—germination rates improve by up to 30%, and seedlings grow stronger with more robust root systems.
