I recently heard that the only zapper that Dr Hulda Clark uses in
her clinic and also recommends is the A-5 Zapper.

A couple of hours ago I phoned Dr Clark Research Association and
spoke to someone (from Shipping department I think) to enquire about
the difference between the A-5 and Delux zappers and to check if Dr
Clark still recommends this zapper. I was told that the information
I'd been given was not correct. She said that the A-5 zapper is no
good and it is very old, and no one sells it now. She said that Dr
Clark has learnt a lot since the creation of that zapper and
suggested I check DrClark.com to check out zappers.

I know that the A-5 zapper is still being sold, but does anyone know
what zapper Dr Clark recommends now, and what zapper she uses in her
clinic?

Also, why do the frequency of zappers vary and what is the
significance?

Any other relevant information would be appreciated.