Need help with Taylor Calcium test kit

[waterbear]

Adding a bit more indicator will not affect the results. HOWEVER, if you cannot tell the difference in the color of the 2nd and 4th tube in the picture on the Taylor website then there is something going on with your color vision, although the TA test is usually much more problematic for the colorblind to use than the CH test. The 2nd tube is hot pink while the 4th tube is sky blue. The colors are not even close!
And yeah, the test that Taylor uses is pretty much the standard test for calcium hardness and there test is actually one of the better ones that I have used (and I have tested calcium in both pools and aquariums).

[JimK]

Adding a bit more indicator will not affect the results.

That's good to know. That means I can at least test within the ballpark, and fortunately calcium isn't one of those things I have to check often.

HOWEVER, if you cannot tell the difference in the color of the 2nd and 4th tube in the picture on the Taylor website then there is something going on with your color vision, although the TA test is usually much more problematic for the colorblind to use than the CH test. The 2nd tube is hot pink while the 4th tube is sky blue. The colors are not even close!

If I really look, I can see the difference between tube 2 and 4, but it doesn't jump out at me. Your right, I've known for many years that my color vision isn't normal. Funny that I don't have much problem with the TA test, although I have a theory; with the TA test when it changes from green to red, it appears darker to me along with the color change. With the calcium test, it doesn't appear to get "darker" when changing from red to blue. Perhaps it has to do with the difference in color saturation and/or contrast that explains my vision issue.

And yeah, the test that Taylor uses is pretty much the standard test for calcium hardness and there test is actually one of the better ones that I have used (and I have tested calcium in both pools and aquariums).

That's what I was afraid of. Too bad we don't have a test like the DPD powder chlorine test that goes clear at the endpoint.

I could have a friend who doesn't have problems with their color vision do the test for me.