matt_a_s

Hello, I brought my spa water for testing at two separate places with the following test results: 1st place (using taylor testing chemical drops) free available chlorine: 5 total available chlorine: 7.5 calcium hardness: 50 cyanuric acid: 0 total alkalinity: 100 ph: 7.4 2nd place (using LaMotte WaterLink SPIN Lab) free available chlorine: 3.32 total chlorine: 21.33 calcium hardness: 0 cyanuric acid: 15 total alkalinity: 76 ph: 7.3 With these results, I'm baffled as to why the test results are so drastically different in regards to the total available chlorine. The first place testing at 7.5 ppm compared to the 2nd place testing at 21.33 ppm????? Has anyone ever received similar test results for the total available that appear to be this drastic in comparison? One place is obviously totally off here and I'm not sure who's test to believe. Although, I've read a number of postings that the Taylor drop testing is more accurate. Therefore, any thoughts would be appreciated. Regards, Matt