Compound Fertilizer Testing
Product types: nitrogen phosphorus potassium ternary compound fertilizer, binary compound fertilizer, sulfur based compound fertilizer, chlorine based compound fertilizer, high tower compound fertilizer, slow-release/controlled-release compound fertilizer, blended fertilizer (BB fertilizer), organic-inorganic compound fertilizer.
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Product Introduction
Detection range
(1) Product types: nitrogen phosphorus potassium ternary compound fertilizer, binary compound fertilizer, sulfur based compound fertilizer, chlorine based compound fertilizer, high tower compound fertilizer, slow-release/controlled-release compound fertilizer, blended fertilizer (BB fertilizer), organic-inorganic compound fertilizer.
(2) Applicable scenarios: raw material acceptance, production quality control, finished product inspection, market supervision spot check, fertilizer efficiency evaluation, environmental safety testing, arbitration testing.
Testing items
(1) Appearance and physical and chemical properties
Appearance, color, particle size, moisture content, pH value, water-insoluble substances, density, solubility, moisture absorption, clumping, uniformity, and storage stability.
(2) Nutrient indicators of a large number of elements
Total nitrogen (N), available phosphorus pentoxide (P ₂ O ₅), potassium oxide (K ₂ O) content, water-soluble phosphorus and citric acid soluble phosphorus content, total nutrient content, nutrient ratio.
(3) Medium and trace elements (compound type)
Calcium, magnesium, sulfur, copper, iron, manganese, zinc, boron, molybdenum content.
(4) Limit of harmful substances
Heavy metals: lead, cadmium, mercury, arsenic, chromium
Harmful substances: Biuret, chloride ions, free acids, fluorides, nitrates, nitrites, pathogens.
(5) Physical performance
Particle size distribution, compressive strength, bulk density, flowability, dispersibility.
(6) Application performance
Nutrient release rate, utilization rate, fertilizer effectiveness period, lodging resistance, compatibility with soil and fertilizers.
Testing standards
GB/T 6274 Fertilizer Terminology and Definitions
GB/T 6275 Fertilizer Sampling Procedure
GB/T 8571 Preparation of laboratory samples of compound fertilizers
GB/T 8572 Determination of Total Nitrogen Content in Compound Fertilizers
GB/T 8573 Determination of Effective Phosphorus Content in Compound Fertilizers
GB/T 8574 Determination of Potassium Content in Compound Fertilizers
GB/T 8576 Determination of free water content in compound fertilizers
GB/T 15063 Compound Fertilizer (Compound Fertilizer)
GB/T 21633 Blended Fertilizer (BB Fertilizer)
GB 38400 Limits for Toxic and Harmful Substances in Fertilizers
NY/T 1973 Requirements for Mercury, Arsenic, Cadmium, Lead, and Chromium Content in Water soluble Fertilizers
was established in 2011. As a national high-tech enterprise recognized by the Zhejiang Provincial Higher People's Court as a judicial authentication institution for construction engineering quality, we specialize in structural performance testing and safety assessment of construction projects, special equipment, communication towers, electromagnetic environments, large bridges, and building safety appraisal.
The company has more than 100 professional and technical personnel, over 90% of whom hold various medium and senior technical certificates. Equipped with complete testing equipment worth over RMB 10 million, our business scope covers the whole country.
