Nitrogen Fertilizer Testing
Product types: urea, ammonium bicarbonate, ammonium chloride, ammonium sulfate, ammonium nitrate, sodium nitrate, calcium nitrate, ammonia water, liquid ammonia, slow-release nitrogen fertilizer, controlled-release nitrogen fertilizer, long-acting nitrogen fertilizer, nitrogen-containing compound fertilizer, organic nitrogen fertilizer, etc.
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Product Introduction
Detection range
(1) Product types: urea, ammonium bicarbonate, ammonium chloride, ammonium sulfate, ammonium nitrate, sodium nitrate, calcium nitrate, ammonia water, liquid ammonia, slow-release nitrogen fertilizer, controlled-release nitrogen fertilizer, long-acting nitrogen fertilizer, nitrogen-containing compound fertilizer, organic nitrogen fertilizer, etc.
(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, odor, particle size, moisture content, pH value, density, solubility, free acids, free bases, hygroscopicity, caking, water-insoluble substances, stability.
(2) Effective nutrient indicators
Total nitrogen content, ammonium nitrogen, nitrate nitrogen, amide nitrogen, available nitrogen, slow-release nitrogen, and effective nitrogen utilization rate.
(3) Sub components and supporting elements
Sulfur, chlorine, calcium, magnesium, sodium, phosphorus, and potassium content.
(4) Limit of harmful substances
Heavy metals: lead, cadmium, mercury, arsenic, chromium
Harmful substances: Biuret, free ammonia, nitrate, nitrite, fluoride, cyanide, insoluble substances, pathogenic bacteria.
(5) Physical performance
Particle size distribution, bulk density, compressive strength, dispersibility, flowability, and storage stability.
(6) Application performance
Nitrogen release rate, crop absorption rate, fertilizer efficiency period, lodging tolerance, 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 2441 Method for determination of urea
GB/T 3559 Ammonium Bicarbonate
GB/T 2946 Ammonium Chloride
GB/T 535 Ammonium Sulfate
GB/T 2945 Ammonium nitrate
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.
