Pool store testing...

[boston62]

I brought a sample to test for metals, it was iron .01. They told me my FC was 5 ppm, but i tested it just before going there and i got 11 ppm, came home and tested again it was 11 ppm, are there any signs of chemicals going bad, they 1 year old, store inside air conditioner home in tge dark at 77 deg. I found no date on bottle. All Taylor chemicals. Thanks

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[JohnT]

Chances are good the test the store uses only goes up to 5ppm so anything above that they report as 5ppm

 

[WASP]

To satisfy my curiosity regarding pool store accuracy, I pulled three samples one morning. I went to two different pool stores and let them run the tests. The two stores did not agree on the test results, though a couple of different readings from each store did match up with my test results. I have not told either store that I use the TFP test kit.

 

[boston62]

Thanks everyone, I thought they might be wrong.

 

[duraleigh]

Probably the most important tenant to the TFP method is to have one of the good test kits and then, ALWAYS trust your own testing. No one cares for your pool more than you do.

 

[OTPirate]

You can call Taylor Technologies and give them the lot number on the bottle and they can give you an expiration date.

 

[boston62]

Yes i do agree, i do test and repair my own pool, equipment .

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[Pooldoctor]

Pool stores can use numerous ways to test water. Any system that is not using titration has been shown to be useless. If a store uses drops, they can possibly be accurate, but depends on sample sizing, lighting and consistency of tester. I guess the same with anyone that buys a Taylor kit. Until consistency of testing becomes a habit, results can be wonky. Buying your own test kit doesn't guarantee accurate results, but can lead to it.