N-15 source??

[Chen Ho An]

Carsten Hohoff (hohoff at uni-muenster.de) wrote:
: What is the best (cheapest) source for N-15 (ammonium chloride 
: or sulfate) ??

Don't know about best (I think they are probably all the same), but what
little I know of is that Martek is very competitive in its pricing.  But
I would suggest that you look at all the companies involved (CKgas,
Goss and there might be others) and prices might be different in
different countries.   Compare and, ahem, haggle a bit?