Randy Holmes-Farley
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My Tank Thread
FWIW, I’m skeptical that any hobby equipment or tests that actually supply accuracy ranges (most don’t) have any data to validate that claim, and if they do, they certainly do not indicate what it even means (that is, what were the conditions of validation).
For a pH meter, does it include uncertainty in calibration (which itself is subject to pH measurement and pH buffer errors), does it include salinity effects? Temperature effects? User errors (not waiting long enough, waiting too long, too much stirring, too little stirring), electrical interferences, bacteria on probe, etc.
For a pH meter, does it include uncertainty in calibration (which itself is subject to pH measurement and pH buffer errors), does it include salinity effects? Temperature effects? User errors (not waiting long enough, waiting too long, too much stirring, too little stirring), electrical interferences, bacteria on probe, etc.