Chromacor Question

I have a Vixen 120mm F6.7 Neo-Achromate does any body no if the chromacor will work with this scope? Thanks in advance.

Chromacor is optimized for chromatic correction of an ~f/10 visual doublet achromat. This means a system in which red and blue foci are close one to another, and placed ~1/2000 f.l. outside the green-yellow focus. Neo-achromat is a four element system, so you'd need to play a little with color filters in order to find out approximate locations of the blue/red foci in regard to the green/yellow. If they are close to those in a comparable visual doublet achromat (~0.36mm separation), Chromacor should noticeably improve color correction, although not as much as in an ~f/10 system.
However, simpler and safer way is probably to ask the retailer.