FIELD: measuring equipment.
SUBSTANCE: method for determination of concentration of potassium ions in compound fertilizers involves the preparation of reference solutions and the preparation of a primary sample solution. The sample solution is placed in a volumetric flask, a solution of hydrochloric acid is added and the volume of the solution is topped up with bidistilled water. The analysis is carried out on a flame photometer by the method of limiting solutions.
EFFECT: reduction of the analysis time, increase of the transition of potassium ions to the sample solution and reduction of the measurement error.
2 tbl
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