So, I was at a local large chain business hotel ("CY") working out in the gym this morning....pool is right in front of me through the windows. In walks the maintenance guy with a couple small taylor bottles with yellow and red caps and a test block from a k-2005 kit. He kneels over to get some water from the top of the pool into the test block and adds the requisite number of "yellow" drops from one bottle. Seeing that he never put in any powder to the test block, I'm assuming he's using a simple DPD test....but he never adds the second reagent to see if there is any CC....he just checks for TC....WOW. After checking the color really quickly, he dumps the contents back in the water. He does this with the "yellow" and with the "red".....double WOW. I wonder how much other "stuff" has been dumped into that pool.