TF-100 and the 5 way home depot Kit. Not Accurate?

[CharlesC]

Hi, I was wondering which one is more accurate. Because sometimes its close but sometimes its way off.

For my TA test:

The first test I got:
TF-100: 70
5 Way: 80

The second test after adding acid (a lot of it because of new plaster and high PH within a 24 hour period):

TF-100(taylor):70
5 Way: 110

I also noticed the PH of the two are slightly off but pretty close. I would say it's off by .1 to .2 at most

TC is pretty accurate of the two

 

[gsmornot]

If your Home Depot is like mine the test kits are stored outside in the back with the garden supplies. The package says to store the reagents in a cool dry place; outside in the garden is not that place. I would trust the TF kit before I trusted the Home Depot version.

 

[Buggsw]

You also have to wonder how long HD has had their merchandise in stock. I know the stuff in our HD garden area always looks pretty worse for the wear. Of course, in my area there is a pool store or Walmart within a mile or so in every direction, so I doubt many people purchase their supplies at HD around my area. Even the grocery stores and Walgreens carry muriatic acid, 10% chlorine, dry shock and test kits around here, so lots of competition.

 

[JasonLion]

Trust the TF100, it has much better compensation for the various possible things that might interfere with the test.