369 bytes added, 
16:46, 18 November 2015 {{Infobox model parameter
| name     = kB
| param    = <onlyinclude>k<sub>B</sub></onlyinclude>
| desc     = Chemical exchange rate constant between sites A and B for the [[LM63 3-site]] fast exchange CPMG model.
| equation = ≈{{:kexAB}}
| units    = rad.s<sup>-1</sup>
}}
[[Category:Relaxation dispersion analysis]]
[[Category:Relaxation dispersion parameters]]