a syncrometer is very easy to use once you are well practiced with it - and I happen to have the same one HC used.
it is also way more powerful than a zapper if you know how to use it to its full potential
essentially a synchrometer is a simplified electro-acupuncture [according to voll] device (tip, search EAV, vega testing) these EAV devices were made in Germany in the 50's and still are made today (from about $2000 to $30000 new)
PROTIP: go to ebay.de and use the search term bioresonanzgerät
you don't need to make slides you can simply use homeopathic vials
also the russians make their own version of an EPFX that is available much cheaper
why would they poison her with cadmium when she regularly tested it with the syncro ?