Originally posted by Greg Grimes:
Ross you got it right hach digitial titrator is the best method I've found for field accuracy since most of the time we are talking about 15 ppm or less. If you are in places where it is 100 ppm or more no reason for extra expense.
Greg, I too have found it to be pretty accurate when compared to samples processed by the company lab. In my line of work I deal with huge variance in hardness & alkalinity levels. I just carry 2 different cartridge strengths for testing the variety. Cuts down on the cost and the time when I'm running alot of samples.