I have 2 different test kits why are they not accurate

May 15, 2009
73
I use a test kit with the 5 bottles for different types of tests and I also purchased the test strips. The test strips claim to check alkalinity and each time I have used the strips my readings are always in the OK range. I take a water sample to my pool guy and twice they tell me my alkalinity is high and I have to buy a bucket of (coreect 20 or something like that) baking soda. Whats the deal here? Is the baking soda a good way for pool companies to make extra $$$ without doing to much damage to the pool or are the test strips bogus? Just curious
 
OK maybe I got it backwards, new to this stuff, maybe my alkalinity was not high enough, but the strip still puts it in the OK range. I will look into getting one of these kits. Who is the MFG name or you just ask for the code number and the pool store knows it?
 
The kits recommended here (TF-100 and Taylor K-2006) are not found in stores. There is a link to the TF-100 in my signature.

Sometimes you can find a Leslie's version of the Taylor kit in stores, called FAS-DPD Service Test Kit.

The TF-100 is the better value, as you get more of certain reagents that you will use more of, and they have very speedy shipping.
 
With test kits you get what you pay for. Your 5 bottle kit was probaby about $15 and your test strips were between $7 and $20 for a tube, depending on which ones you got. Consider how much your pool cost and then think if spending around $60 on a GOOD testkit that will accurately and precisely test the water parameters you need in the exact same way that professional pool maintenance people do is worth the money...or better yes, ask ANYONE who has bought such a kit!
The answer is going to be yes.
In the old days of computers there was a term, GIGO. I stood for "Garbage In, Garbage Out". This meant that if you had bad data input your results would be bad. With a pool your input data are your test results. If you cannot believe them or they do not have proper resolution for balancing water then you cannot balance your pool.
Strips do not have enough resolution for balancing water, they cannot test CH but only test TH which si not a valid test for pool water, and are time dependent for a proper read.
Cheap test kits only test total chlorine (yellow color comparator for chlorine test) and do not include CH or CYA tests, which are necessary for proper pool maintenance.
 
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