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Quick Details

  • Classification: Organic Fertilizer
  • Type: Humic acid
  • CAS No.: 479-66-3
  • Other Names: K humate
  • MF: (OH)n-R-(COOH)n
  • EINECS No.: 215-809-6
  • Place of Origin: Shaanxi, China (Mainland)
  • Release Type: Quick
  • State: Powder
  • Purity: 80%
  • Application: Organic Fertilizer,Increase in Yield,Anti- dry hot wind
  • Brand Name: CITYMAX
  • Model Number: Ultra HumiMax
  • Name: humic acid
  • Origin: 100% Young Leonardite
  • Appearance: powder/flake
  • Color: Black
  • PH: 9-11
  • Certificate: OMRI
  • Humic acid: 80%
  • potassium: 10%
  • Misture: 15%
  • Shape: powder

Packaging & Delivery

Packaging Details Available in 25kg/Paper bag or plastic woven bag
Delivery Time Delivery will be within 15 days after receiving deposit.

Hot potassium humic acid

What advantages that our humic acid have

Ultra HumiMax is a type of Potassium Humate derived from Leonardite. The content is extremely high in Humic Acid, and with the highest water solubility in both flake and powder form. 

Humic acid details

Humic Acid(Dry Basis)


Water Soluble




pH Value


Humic acid more information

Ultra HumiMax has OMRI organic certification. Humic Acid have a high cation exchange capacity (300 - 700 mg/100g), and hold lots of nutrients in reserve this reserve releases nutrients slowly, but continuously to plants. Humic Acid can slowly decompose primary soil minerals, releasing nutrients from the crystal structures. 

Humic acid application


Ultra HumiMax is mainly used in agricultural crops, fruit trees, landscaping, gardening, pastures, grains and horticultural crops, etc.

Soil Application: 8-12kg/ha
Irrigation: 8-12kg/ha
Foliar Application: 5-8kg/ha with the dilution rate of 1:600-800

Humic acid benefits


• Anti- hard water, deflocculation
• Improves potash fertilizer utilization
• Slows decomposition to increase the release of potassium
• Promotes crop resistance to drought and disease
• Long-lasting and fast-acting
• Enhances water holding capacity of soil
• Reduces soil erosion and improves workability of soil
• Stimulates crop growth
• Regulates the release of nutrients
• Improves the quality of agricultural crops
• Improves efficacy of Herbicide
• Improves the efficiency of fertilizer
• Improves the yield of crops

Humic acid packages

1kg, 5kg, 10kg, 20kg, 25kg per bag. Customized packaging are also available.

Humic acid certificate


ISO9901, OMRI organic certification.

Why Choose us?

  1. We are a China Leading humic acid Manufacturer.
  2. Alibaba Assessed Gold Supplier.
  3. We are the only Chinese humic acid company who has OMRI certificate in every series.
  4. We have already attracted customers from more than 30 countries and regions.
  5. Cases in many countries.

How to Contact Us?

Send us your enquiry, and we would solve all problems of your soil and crops

Once you choose CITYMAX, forever we have a fulfilling relationship


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China (Mainland) | Manufacturer, Trading Company
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The supplier’s transactions conducted via Alibaba.com in the past 6 months.
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Supplier's Trade Assurance Limit: US $46,000
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