Few references are given in the literature 1,*&I to the ion exchange behavior of tin, antimony and tellurium. Since it was desired to develop radiochemical analysis methods for these elements at this laboratory, data were obtained with oxalate as elutriant which should be of intcrcst, especially in view of the probable complexing5*G*T of tin and antimony in this medium. To determine the degree of resin adsorption, distribution expcriments8 were carried out by shaking for at least 16 hours Dowex-go (NH,,-form) and Dowex-r (oxalate form) resins with o.rnf oxalic acid solutions (neutralized to different 1~'s with ammonia) containing l13Sn, i2%b and 12GmTe tracers*. The supcrnatant liquid was centrifuged and assayed by counting to determine the distribution coefficient, IQ**. As expected, little or no adsorption of tin, antimony or tellurium occurred on Dowex-so. Using Dowex-x , tellurium ***showed no adsorption, tin(W) varied from Kd of 5800 at p&r 1.4 to 6700 at pH 4.2 and the I<d of antimony(V) was 42 at pH 1.4, dropping to 15 at pn of 4.2. No adsorption of the elements occurred at PH 7.4 and 8.8. These results indicated a probable good column separation, though to avoid hydrolysis difficulties, the pn should probably not be above 1.4. Column experiments were carried out to demonstrate the separation and the elution of the activities was followed by means of a flow pipette, end-window G-M tube, logarithmic-response count rate meter and Brown recorder****. After chlorine oxidation of Sn and Sb tracers, microliter quantities of the tracers in 'L Sn$ HCl were mixed with o.~ild oxalic acid and placed on 'L 0.04 cm2 columns of Dowex-r (oxalate form) equilibrated with o.rn1 oxalic acid. Tellurium and l The xx3mIn daughter (TX/Z = I .74 h) of 1x3 Sn was allowed to decay before