Taylor k-2006--how do you measure CYA below 30 PPM

[duganderson]

I just got my Taylor K-2006. Is there a way to measure CYA below 30 PPM. The small tube does not go lower than that.

Are there more detailed directions about testing in the booklet. I can't seem to find them in there.

Thanks, Doug

 

[cowboycasey]

Doug, it does not test below 30ppm, also this time of year you will also have to bring the water inside and warm it to room temp (about 70 degrees) and then read it outside in bright light with your back to the sun

CYA - Cyanuric Acid Test

Cyanuric acid (CYA) is the chemical name for the product commonly called “pool water stabilizer” … Read more…

www.troublefreepool.com

 

[duganderson]

Just got my Taylor K-2006 kit. Should you leave the R-0870 in the ziplock bag it comes in to prevent it from getting damp inside OR is the bag just for shipping? .....EDIT.....I just found an answer to this......the ziplock bag is just for shipping

 

[duganderson]

In order to test CYA below 30 PPM with the K-2006 kit, wouldn't it work to add an equal amount of distilled water to my water sample, run the test and multiple the results by 2 OR does adding distilled water mess up the test?

 

[HermanTX]

What you propose works for those with high CYA that is above 100 (also not read on the tube). By adding distilled water i.e. water with no CYA you have cut the water sample by 50%. So now if you tested and got 90 CYA you would multiply to get a CYA of 180.

 

[mas985]

I just got my Taylor K-2006. Is there a way to measure CYA below 30 PPM. The small tube does not go lower than that.

If your CYA is below 30 ppm, it is too low so you just need to bring up to at least 30 ppm. But how are you chlorinating?

If you are using pucks, CYA will eventually rise on it's own so don't worry about it
If you are using an SWG, you need 80 ppm so just assume you have 30 ppm now and add 50 ppm
If you are using liquid chlorine, add 20 ppm, 30-50 ppm is the target

 

[duganderson]

Right now, I'm using nature2, MPS and about weekly diclor.

HermanTX....thanks for clarifying....that makes sense.

Could I use half the amount of hot tub water, run the test and then divide by 2 to get measurements below 30 PPM?

 

[HermanTX]

Right now, I'm using nature2, MPS and about weekly diclor.

HermanTX....thanks for clarifying....that makes sense.

Could I use half the amount of hot tub water, run the test and then divide by 2 to get measurements below 30 PPM?

The CYA is on a log graduated scale so for those that multiply by 2 is only an estimate at best. Thus trying to go lower is even more difficult because as you can see the space between each graduation is larger as you go lower on the scale. You can purchase a CYA tube from tftestkits.net that goes from 20 to 100. That may be a better option It comes in the standard TF-100 test kit but they sell it as a separate kit as well.

 

[jseyfert3]

Could I use half the amount of hot tub water, run the test and then divide by 2 to get measurements below 30 PPM?

No. The only way to measure CYA under 30 is with a different test, such as the tube TFTestkits sells that goes to 20.

The water to reagent mix must remain at 50/50 for the test, so you can’t use half the water. Dilution to measure CYA over 100 works because the water is mixed with water containing no CYA, so the sample itself has a lower CYA when tested, but the sample to reagent mix stays at 50/50. There’s no (easy) way to do the opposite and remove water from the sample while leaving the CYA to have the sample have more CYA than the water originally had.

Hope this makes sense.

 

[Methuselah]

I know this is an old thread but I see no references to older answers and have read from current date to this post ... so I'm going to add to this discussion for the sake of those searching for an answer.

The only way I've thought of to double the concentration of CYA in a water sample was to double it's concentration and then read it off the test vial. I did this by just waiting for 50% of the sample to evaporate. I suppose there's a minuscule error if you put in a drop of bleach to keep the sample from turning green if it takes too long.

Anyway, this worked for me during the time I was building up the CYA to my targeted 30 ppm, and after hitting that target I felt the results were verified because the math worked out to 32 ppm for the measured amount of added dichlor vs. the two readings of 31 and 33 from the pool store testing of some water samples. I believe this process worked because I don't think the CYA evaporates.

Long story short, evaporate half your sample, read and double the tested result.

 

[SoDel]

I know this is an old thread but I see no references to older answers and have read from current date to this post ... so I'm going to add to this discussion for the sake of those searching for an answer.

The only way I've thought of to double the concentration of CYA in a water sample was to double it's concentration and then read it off the test vial. I did this by just waiting for 50% of the sample to evaporate. I suppose there's a minuscule error if you put in a drop of bleach to keep the sample from turning green if it takes too long.

Anyway, this worked for me during the time I was building up the CYA to my targeted 30 ppm, and after hitting that target I felt the results were verified because the math worked out to 32 ppm for the measured amount of added dichlor vs. the two readings of 31 and 33 from the pool store testing of some water samples. I believe this process worked because I don't think the CYA evaporates.

Long story short, evaporate half your sample, read and double the tested result.

Uh, you mean halve the tested result?

 

[Methuselah]

@SoDel, yup, thank you for the correction