1 umol, 2'-O-TBDMS RNA CPG Synthesis Column, 1000A 26 mg of CPG with an average loading of 42-46 umol/g, so 1092-1196 nmol. Yield is always 40-60% of scale after 1st deprotection (base).  

200 nmol, 2'-O-TBDMS RNA CPG Synthesis Column, 1000A 8 mg of CPG with an average loading of 30-40 umol/g, so 240-320 nmol. Yield is always 40-60% of scale.