ISO 17319:2015 Preview
Fertilizers and soil conditioners -- Determination of water-soluble potassium content -- Potassium tetraphenylborate gravimetric method
ISO 17319:2015 specifies a gravimetric method for the determination of the water-soluble potassium content of test solutions of fertilizers. It is suitable for use in arbitration and for reference purposes.
ISO 17319:2015 is applicable to those fertilizers containing more than 1,0 % K2O or equivalent amount of K content.
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