Fig. 2From: New sensitive method for HEPES quantification in 68Ga-radiopharmaceuticalsExamples of chromatograms with an isocratic system of NH4HCO2 20 mM pH 9.5, UV 195 nm, from 0 to 4 min of: an HEPES solution (top); a GA-DOTATOC (middle) solution and a [68Ga] GaDOTATOC solution (bottom)Back to article page