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    1. Our service

      Centre Testing International Co., Ltd. (CTI) is the pioneer and leader in the TIC Industry which provides one-stop solutions on testing, inspection, certification, calibration, audit, training & technical services.

       

      By Industry

      Our service capabilties cover the upstream and downstream of the supply chain including textile and apparel,toys,electronic appliances,medical health,food...andother industries.

      Specialty

      Comprehensively guarantee quality and safety, promote compliance and innovation, demonstrate brand competitiveness, and achieve higher quality, healthier, safer, and greener sustainable development.

      AUTHORITY & TRUST
      QUALITY & VALUE
      Determination of NPK in Fertilizer

      CTI provides testing services for nitrogen, phosphorus, and potassium in various fertilizers to accurately control whether the nitrogen, phosphorus, and potassium content of fertilizers meet the requirements of corresponding products, and adjust soil fertility to adapt to the development of agriculture.

      Determination of NPK in Fertilizer

      ?      Service Background

      The degree of soil being excavated and utilized is getting higher and higher. Fertilizers can provide plants with one or more essential nutrients. They are important substances to improve soil properties, increase soil fertility, and regulate crop growth. Therefore, fertilizers are needed to supplement these nutrients. Nowadays, the fertilizer market is mixed, product quality varies from good to bad, and fertilizer fraud scandals are common. How to choose fertilizers wisely is of vital importance. It is necessary to accurately understand fertilizer quality problems and strictly control the quality and safety risks of product planting, fertilizer production, circulation, and sales.

      ?      Service Content

      Serial Number

      Sample Type

      Executive standard

      Test Items

      Detection method

      1

      Organic fertilizer

      NY 525-2012

      Mass fraction of total nutrients (nitrogen + phosphorus pentoxide + potassium oxide) (calculated on a drying basis)

      N

      NY 525-2012

      P2O5

      NY 525-2012

      K2O

      NY 525-2012

      2

      Compound fertilizer

      GB/T 15063-2009

      Mass fraction of total nutrients (N+P2O5+K2O)

      N

      GB/T 8572-2010

      P2O5

      GB/T 8573-2017

      K2O

      GB/T 8574-2010

      3

      Blending fertilizer

      GB/T 21633-2008

      Mass fraction of total nutrients (N+P2O5+K2O)

      N

      GB/T 8572-2010

      P2O5

      GB/T 8573-2017

      K2O

      GB/T 8574-2010

      4

      Organic-inorganic compound fertilizer

      GB/T 18877-2009

      Mass fraction of total nutrients (N+P2O5+K2O)

      N

      GB/T 17767.1-2008

      P2O5

      GB/T 8573-2017

      K2O

      GB/T 17767.3-2010

      5

      Major element water-soluble fertilizer

      NY 1107-2010

      major element content

      N

      NY/T 1977-2010

      P2O5

      NY/T 1977-2010

      K2O

      NY/T 1977-2010

      6

      Monoammonium phosphate and diammonium phosphate

      GB/T 10205-2009

      Mass fraction of total nutrients (N+P2O5)

      Mass fraction of total nitrogenN

      GB/T 10209.1-2008

      Mass fraction of available phosphorusP2O5

      GB/T 10209.2-2010

      Water-soluble phosphorus as a percentage of available phosphorus

      GB/T 10209.2-2010

      7

      Marsh fertilizer

      NY/T 2596-2014

      Total nutrient content (N+P2O5+K2O)(calculated on a dry basis)

      Total nitrogen

      GB/T 17767.1-2008

      Total phosphorus P2O5

      GB/T 17767.2-2010

      Total potassium K2O

      GB/T 17767.3-2010

      8

      Leaf fertilizer containing organic matter

      GB/T 17419-2018

      Total nutrient content(N+P2O5+K2O)

      Total nitrogen

      NY/T 1977-2010

      P2O5

      NY/T 1977-2010

      K2O

      NY/T 1977-2010

      9

      Organic matrix for greening

      GB/T 33891-2017

      Total nutrients (total nitrogen + total phosphorus + total potassium)

      Total nitrogenIn N

      NY 525-2012

      Total phosphorusIn P2O5

      NY 525-2012

      Total potassiumIn K2O

      NY 525-2012

       

      ?      Our Strengths

      1.We have professional technical support, testing team and dedicated fertilizer testing laboratory.

      2.Our fertilizer testing covers most fertilizer products.

      3.Our laboratory obtained CMA qualification.

      4.We have rich experience in laboratory data accumulation and cooperation.

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