According to Boris, there are (unlike many "zyme" products) NO bacteria in HGZ.
All this makes me want to get a microscope.
Does anybody have the list of instruments that Tom Hill posted last year for testing soil? I am running behind on testing my soil and some amendment mixes and would rather have the capability in house to run the required tests.
Think this might be the link you're looking for. He has 5 meters that he likes to use.
ORP, refractometer (reads degrees Brix/%sucrose), PH, ERGS, and an Na reader. Hope the tests read well for you.
https://www.icmag.com/ic/showthread.php?t=159846&do=filter&fid=1547&page=2