Taylor K-1567 Calcium Hardness Test Question

[sbcpool]

Being colorblind, the calcium test kit that comes with the TFT-100 is impossible to use. I noticed that Taylor has the K-1567 kit that goes from red to blue which is easy to use. The only potential caveat is that it's measuring calcium hardness as CaCO3. Is it a simple matter of converting the results from the K-1567 to pure calcium by multiplying by 0.4? Or is the TFT kit also measuring calcium hardness?

 

[mknauss]

The CH test in my TF100 goes from red to blue.

 

[sbcpool]

Wow. That ended up in the wrong thread.

 

[sbcpool]

The CH test in my TF100 goes from red to blue.

It's not from pink to blue?

 

[mknauss]

Pink, red. Same thing. With our high CH, it goes purple for a long time before blue.

 

[sbcpool]

When you're colorblind red = red, pink = blue.

 

[mknauss]

Add more indicator. R0011L. Try 5 drops. See if the intensity helps. It will not change the test results.

 

[sbcpool]

Thanks. I'll try that.

 

[Saturn94]

Thanks. I'll try that.

Did you have any luck with it? This is also the most difficult test for me.

Fortunately, with a vinyl liner and low CH fill water, I really don’t have to use that test. However, at spring opening this year I needed to use cal-hypo (chlorine scarce) and needed to to know how much I could add without raising CH too much.

 

[duraleigh]

I am waiting for that answer, too. I don't know this but I think you can still perceive a color CHANGE regardless of the hue.


Red-green color blindness
The most common type of color blindness makes it hard to tell the difference between red and green.
There are 4 types of red-green color blindness:

• Deuteranomaly is the most common type of red-green color blindness. It makes green look more red. This type is mild and doesn’t usually get in the way of normal activities.
• Protanomaly makes red look more green and less bright. This type is mild and usually doesn’t get in the way of normal activities.
• Protanopia and deuteranopia both make you unable to tell the difference between red and green at all.

Blue-yellow color blindness
This less-common type of color blindness makes it hard to tell the difference between blue and green, and between yellow and red.
There are 2 types of blue-yellow color blindness:

• Tritanomaly makes it hard to tell the difference between blue and green, and between yellow and red.
• Tritanopia makes you unable to tell the difference between blue and green, purple and red, and yellow and pink. It also makes colors look less bright.

 

[Saturn94]

On this test I struggle seeing the transition from purple to blue. Even watching the test performed on YouTube I don’t see the transition.

Years ago Ben from PF helped me come up with a way that helps some. It involves making the color more saturated and using a second sample tube for comparison.

I‘m just glad I rarely need to do this test.