Fertilizers and soil conditioners —Determination of watersoluble potassium content — Potassium tetraphenylborate gravimetric method

رقم المستند: NL ISO 17319 : 2018
القطاع: NULL
TC: NL TC 134
ICS:
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.