Testing looked at the mercury removal performance of various resins: Amberlite(TM) GT-73A from Rohn and Haas, Purolite(TM) S-920 from Bro-Tech Corporation, Ionac(TM) SR-4 from Sybron Chemicals, and SIR-200(TM) from Resin Tech. Larger than explained variations from the SIR-200(TM) testing is due to one data point being one order of magnitude larger than the rest of the data. Analysis in another lab verified the accuracy of this data point. Additional studies must address the chemical stability of SIR-200(TM) (a possible source for the one outlier data point) in this solution. This study found that the resin SIR-200(TM) from Resin Tech performed similarly to the resin GT-73A from Rohn and Haas.