Technical Note; Calculating pH from Sulfuric Acid concentration, STI-TN-20170818-1

This is a STI Technical Note for  Sulfuric Acid concentration and ph, STI-TN-20170818-1,  from STI about “Calculating pH from Sulfuric Acid concentration”.


In this note, STI shows

  • How to calculate pH value from a given weight concentration of Sulfuric Acid, and vice versa.
  • A graph showing the relationship between the pH value to a given weight concentration in %.


As a summary, the scrubber effluent with pH=~3.0 is a sulfuric acid solution with ~10-4% of weight concentration.


    pH vs. weight concentration of sulfuric acid (%)




This will be used as a guideline in selecting the scrubber material.