[en] The behavior of several commercial solubilizers (PCS, Readysolv VI, Insta-Gel, and Aquasol) when quenched with an aqueous system was examined. The relationship between the external standard channels ratio (ESR) and the isotope channels (C/R) ratio was determined before and after phase change for both tritium and carbon-14. A comparison was also made between the response of quasi-logarithmic amplification and linear amplification operated in the summed or lesser pulse-height mode. Observed data revealed that neither the ESR nor C/R is a satisfactory method of Quench Correction after phase separation. It does not appear that the phase distribution of the tritium radioactivity has any drastic effects on the results observed