Fertiliser, GAFTA Analyst

Fertiliser - GAFTA Analyst and GAFTA Cargo Superintendent

As a leading provider of inspection and analytical services, Alex Stewart Agriculture has built a trusted international reputation as a GAFTA Superintendent to the fertiliser trade over many years. We inspect fertiliser at production site, at loading or discharge port, stockpile or in the warehouse. Alex Stewart's experienced and trained inspectors are on hand around the clock to inspect a wide range of fertiliser products including bulk, bagged or liquid fertilisers :-

  • Ammonium Nitrate
  • Ammonium Poly Phosphate solution (APP)
  • Ammonium Sulphate
  • Anhydrous Ammonia
  • Calcined Ammonium Nitrate (CAN)
  • Compound fertilisers
  • Di-Ammonium Phosphate (DAP)
  • Magnesium Sulphate
  • Mon-Ammonium Phosphate (MAP)
  • Muriate of Potash (MOP)
  • NPK
  • Rock Phosphate
  • Sulphate of Potash (SOP)
  • Sulphur
  • TSP
  • Urea
  • Ureic Ammonium Nitrate Solution (UAN)


Alex Stewart Agriculture operates GAFTA approved fertiliser laboratories in Argentina, Chile, India, Peru , UK and the Ukraine. Fast and accurate fertiliser analysis is carried out by experienced and qualified chemists using both classical and modern methodology:

  • Kjeldahl method for Nitrogen
  • Gravimetric method for phosphates
  • ICP for Magnesium sulphate and Potassium
  • Biuret in urea by spectrophotometric method

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