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Fertilizers and soil conditioners. Determination of water-soluble potassium content. Potassium tetraphenylbor…

Fertilizers and soil conditioners — Determination of water-soluble potassium content — Potassium tetraphenylb…

Overview ISO 17319:2015 describes a gravimetric reference method for measuring the water‑soluble potassium content of fertilizer test solutions using the potassium tetraphenylborate (NaTPB) precipita…