Correction

Michael Heidelberger, Catherine Fiona Macpherson

Science · 1943 · 10 citations · 0 references

Concepts

Abstract

IN a revision of the proof a serious omission was made in the inadvertent dropping of "and 1 ml. of 0.1% CuSO 4 ⋅ 5H 2 O solution" after "Aliquots of 2.0 ml are mixed with 6 ml of clear 12.5 per cent Na 2 CO 3 solution" on p. 405. Addition of copper is essential in enhancing the sensitivity of the Folin reagent, as already noted by others.