Agriculture Analytical Chemistry Laboratory needed for powdered, organic fertilizer to three AOAC Methods:
AOAC 993.13 or 978.02 for Total Nitrogen (N)
AOAC 945.01 for Water Insoluble Nitrogen
AOAC 2015.18 (A) or 983.02 for Soluble Potash (K20)
Other Fertilizers testing, analysis, scientific research and development, inspection, certification, engineering, failure investigation, and product development needs include :
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