I think I had my water tested 3-4x before I realized I needed to start searching the 'net for a way to do my own testing. I stumbled on Ben's old site which led me here. My initial "mission" was to find the equipment the pool stores use. I was quickly re-directed to the BBB and the type of testing we all know and love. Just out of curiousity, where would you buy or price the equipment that they use? Also, people have readily given examples of the wide spread in the results they see. Is the way done here actually more accurate?
For the record, I do own and use the TFT kit. As I've dealt with iron stains then an algae outbreak it seems that I perpetually have the kit out with various beakers out to dry. I'm fairly sure my wife is sick of seeing all of this out and about, hence the curiosity.