Приготування калібрувальних розчинів для TDS-метрів на основі хлориду натрію

Abstract

The paper describes the methodology for preparing calibration solutions for TDS meters based on analytical grade sodium chloride and absolutely distilled water. The requirements for reagents, laboratory equipment, and measurement conditions are presented. Calculation relationships for determining mass concentration in the range of 100–2000 ppm and the procedure for preparing stock and working standard solutions are provided. The proposed approach ensures concentration reproducibility and can be used for metrological support of water mineralization control devices.