I normally use individual test methods such as a Hach colorimeter for sanitizer, a calibrated digital pH meter, and for TA I use the Taylor drop kit. Someone thought it would be a good idea if I had the LaMotte system to "same me time", and I've been using it to take additional measurements to compare to my own readings. I've noticed that the TA is always about 20ppm lower on the LaMotte system. So I ran the MCD (Meter Check Disk) that comes with it, and it showed readings that were in the middle of their acceptable ranges. Note that you can't actually adjust the thing, just check it. In my case, I like traceable calibration standards. Anyway, I always get my Taylor drops directly from Taylor, and now that they print expiration dates on them I always make sure they are not "expired".
I have a co-worker that sees the same 20ppm difference in his TA readings. Just wondering if anyone else here has noticed the same thing. I saw some posts on here that were several years old that were mixed opinions.
I have a co-worker that sees the same 20ppm difference in his TA readings. Just wondering if anyone else here has noticed the same thing. I saw some posts on here that were several years old that were mixed opinions.
