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Caustic soda concentration meter Product List

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Online caustic soda (NaOH) concentration meter

By simply inserting a resin rod into the liquid, you can measure the concentration of caustic soda.

<<Used in the following applications>> * Shower cleaning solution (NaOH 5%) for major insulator manufacturer's flue gas desulfurization system, scrubber * Cleaning of stainless steel fibers (NaOH 5%) * Stripping from evaporated aluminum film (NaOH 2%, 50°C) * Dissolution of gelatin for gelatin manufacturers and leather (gelatin extraction) (3% HCl) * Cleaning of optical glass (major lens manufacturer, 5% NaOH, 50°C) * Cotton wool manufacturer (2% H2SO4)

  • Instrumentation and Control Systems
  • Caustic soda concentration meter

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Instran Caustic Soda Concentration Meter

A caustic soda concentration meter that achieves very high measurement accuracy.

The measurement is conducted by titrating the sample with hydrochloric acid and reaching a colorimetric endpoint corresponding to a specific pH. In this measurement, phenolphthalein is used as an indicator. In the initial state, when it reacts with caustic soda, the solution shows a deep pink color (pH > 8). Subsequently, as it reacts with the titrating acid, the pH decreases, and when it reaches pH < 8, it surpasses the equivalence point of caustic soda, and the color of the solution changes to colorless (transparent). By using an LED of appropriate wavelength and a photometer, high measurement accuracy is achieved.

  • Other measurement, recording and measuring instruments
  • Caustic soda concentration meter

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