Liquid scintillation counting of aqueous solutions of potassium salts in a Triton X-100/toluene scintillant

The use of a toluene/Triton X-100 scintillant for counting ¹⁴C in aqueous solutions of potassium salts including potassium hydroxide has been investigated. Suitable conditions for the counting of CO₂ entrapped in potassium hydroxide are described. Quench correction by automatic external standard channels ratio procedures has been found to be of value with optimised conditions of counting.