LaMotte ColorQ Water Tester

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Originally Posted by Amir

Donald,
don't you think LaMotte should or would have indicated in their instructions the longer length of time for samples. I can understand that they want to make it as simple as possible, but at least a footnote? last night I put a sample of the water with a thermometer in the refrigerator until the water was at 75F and tested for CYA according to their test procedure. The results was a CYA of 12. ups picked up the unit along with a sample of my water. I hope that this problem is just specific to my colorq and other unit or the replacement one will be more accurate.
Regards

Amir

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Amir
Understand your frustration, and yes LaMotte could improve the instructions after some run time. I suspect they were not aware of the intricacies of this new tester. I for one learn something new week about how to make my analysis results repeatable. Just today, I resampled for CYA after getting a 25ppm result after a long string of 38ppm results for the past month. Today, I shook the sample vice going up and down 3x, and got a 45ppm result, which is exactly what my Talor black spot test indicates. I believe based on other forum threads, that the CYA sample is the "toughest" for the colorQ since it really is a turbidity test of sediment vice a chemical reaction that results in a color

Evan,

I loved the process of the colorq, but hated the results. Also, they never told me to let the samples sit with the reagents for 2 minutes. They never mentioned that. In fact, I sent them a water sample. They claim that my "high" CH is throwing off ALL the results. That is my experience. They were all way off, not just CYA and CH. Everything was wrong and by a lot. Maybe if I had tried to let the samples sit, it would have worked. Since I was never told this, I returned the kit for a refund.

I really wanted the colorQ to work out. Maybe I will try it again when I eventually lower my CH.

Here is the latest update. I sent the colorq back with a sample of water. I called them yesterday and they said that they tested the machine and some costants were not correct and they are shipping me a new one that has just been tested. Hope this works out. I like this machine!
amir