>Better yet, RbBr? and pH MES, MOPS, and HEPES with RbOH? >I haven't checked the price.
Including shipping in the US RbBr: 50 g 99% pure is ~$150. RbOH: 25g 99+% pure in 50 % water runs about ~$120. It would be interesting to see how the substitution would influence the crystallization or crystal integrity such as a quick soak just before data collection. Hope that helps, Sean P212121 http://store.p212121.com/