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A simple separation technique of 99m Tc from Na 2 [ 99 Mo]MoO 4 in sodium hydroxide solution obtained from the 98 Mo(n,γ) 99 Mo reaction is described. Low to medium specific activity 99 Mo-molybdate solution of 7.4–18.5GBq (200–500mCi) in sodium hydroxide was passed through a tiny Dowex-1 column (25mg) to separate the 99m Tc from the...