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Thread: CYA Standard R-7065

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    CYA Standard R-7065

    I have been testing CYA in my pool for a year and a half. I'm doing a pretty good job of it. I thought it would be a good ideal to buy the CYA standard solution R-7065, just to check my calibration eye.

    I just received my R-7065 and R-0013 8oz. each today.



    One was labeled R=7065, but the other was not labeled. Both was sealed, I'm assuming they forgot to put the R-0013 label on the bottle.

    No big deal, but when I tested the solution (15ml R-0013 & 15ml R-7065), Speed stir, rest for 30 sec, then speed stir.
    Behold I indicate 30ppm not 50. There is another thread talking about this, and I'm getting the same result.



    I don't use the small bottle with red cap, the bottom of label is 15ml and top of label is 30ml. So I just use the measurement container and it works for me.

    Questions
    1) TFTestkits is closed right now, because its 1900 here in TX. But I wonder if the bottle that is not label really is R-0013?
    2) And am I doing the CYA test correct, I have two CYA tester tubes, and they both indicate 30 when the black dot goes away?

    Thanks, John

    BTW, test results from today
    14,000 gallon IG DiamondBrite pool with 2 ea. waterfalls and slide, Hayward Tristar 2.0 HP 2-speed pump, Hayward 3/4 HP waterfeature booster pump, Hayward 48sf DE filter, Hayward PS4 wireless controller, 1 skimmer and 4 returns, Polaris 280 pressure cleaner w/booster pump, 7 x 7 spa w/6 jets, TF-100 Test Kit w/speed stir

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    Richard320's Avatar
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    Re: CYA Standard R-7065

    The simple answer is: you're doing the test wrong. Experiment with the lighting, how you hold it, whatever, until you read 50 consistently. Then use that same technique when you test your pool.

    A standard is a fixed value to check calibration of something. If you own a micrometer, it will often come with a small metal rod called a standard. If your micrometer doesn't read right, something is wrong with the measuring tool, not the standard.

    It's no different here. Your measuring tool - your eyes - needs to be adjusted so it reads correctly against the standard.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: CYA Standard R-7065

    Quote Originally Posted by Richard320 View Post
    The simple answer is: you're doing the test wrong. Experiment with the lighting, how you hold it, whatever, until you read 50 consistently. Then use that same technique when you test your pool.
    OK, fair enough. I will practice some more. If I'm correct, I hold the CYA test tube at waist high & pour, and sun at your back? Also, is it correct to use the graduated cylinder with speed stir to mix solution?

    Thanks, John
    14,000 gallon IG DiamondBrite pool with 2 ea. waterfalls and slide, Hayward Tristar 2.0 HP 2-speed pump, Hayward 3/4 HP waterfeature booster pump, Hayward 48sf DE filter, Hayward PS4 wireless controller, 1 skimmer and 4 returns, Polaris 280 pressure cleaner w/booster pump, 7 x 7 spa w/6 jets, TF-100 Test Kit w/speed stir

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    Richard320's Avatar
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    Re: CYA Standard R-7065

    I mix mine with the speedstir.

    However it works for you so you read 50 is right. For me, that means only holding the view tube with thumb and forefinger at the very top so I don't shade it, and having the sun to the side while it also reflects off the patio concrete.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: CYA Standard R-7065

    Quote Originally Posted by Richard320 View Post

    However it works for you so you read 50 is right. For me, that means only holding the view tube with thumb and forefinger at the very top so I don't shade it, and having the sun to the side while it also reflects off the patio concrete.

    At Waist High?
    14,000 gallon IG DiamondBrite pool with 2 ea. waterfalls and slide, Hayward Tristar 2.0 HP 2-speed pump, Hayward 3/4 HP waterfeature booster pump, Hayward 48sf DE filter, Hayward PS4 wireless controller, 1 skimmer and 4 returns, Polaris 280 pressure cleaner w/booster pump, 7 x 7 spa w/6 jets, TF-100 Test Kit w/speed stir

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    Richard320's Avatar
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    Re: CYA Standard R-7065

    However it works for you so you read 50 is right.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: CYA Standard R-7065

    Quote Originally Posted by Richard320 View Post
    However it works for you so you read 50 is right.

    OK, thanks buddy.
    14,000 gallon IG DiamondBrite pool with 2 ea. waterfalls and slide, Hayward Tristar 2.0 HP 2-speed pump, Hayward 3/4 HP waterfeature booster pump, Hayward 48sf DE filter, Hayward PS4 wireless controller, 1 skimmer and 4 returns, Polaris 280 pressure cleaner w/booster pump, 7 x 7 spa w/6 jets, TF-100 Test Kit w/speed stir

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    Re: CYA Standard R-7065

    If that wasn't the correct reagent the mixture wouldn't turn cloudy.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: CYA Standard R-7065

    John,

    Please email your name and Tel# to TFTestkits@gmail.com. We will send you a new bottle with a label. I don't like that an unlabeled bottle got out of our shipping and cannot figure out how just yet but we will. I am sorry this inconvenience happened to you.

    Please call me tomorrow @ 919.528.1104 and we'll get that blank bottle disposed of properly.

    I can't tell exactly what it is for sure (although I am almost positive nothing but R-0013 would cause the cloudiness) but none of the reagents in the kit are harmful enough to do much of anything. Again, sorry....please call me and we'll get it sorted out.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: CYA Standard R-7065

    Quote Originally Posted by duraleigh View Post
    John,

    Please email your name and Tel# to TFTestkits@gmail.com. We will send you a new bottle with a label. I don't like that an unlabeled bottle got out of our shipping and cannot figure out how just yet but we will. I am sorry this inconvenience happened to you.

    Thanks Dave,

    Email sent today, I will be out of town this week end so I won't be able to call.

    thanks, John
    14,000 gallon IG DiamondBrite pool with 2 ea. waterfalls and slide, Hayward Tristar 2.0 HP 2-speed pump, Hayward 3/4 HP waterfeature booster pump, Hayward 48sf DE filter, Hayward PS4 wireless controller, 1 skimmer and 4 returns, Polaris 280 pressure cleaner w/booster pump, 7 x 7 spa w/6 jets, TF-100 Test Kit w/speed stir

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    Re: CYA Standard R-7065

    I received my first-time CYA Test solution R-7065 today from TFTkits site.

    I'm getting consistent results in the 30's, same as JohnH . I checked it 4-5 times, pouring the vial contents back into the mixer bottle, re-testing, etc. I'm using the Taylor CYA vial and the Taylor P/N 919 mixing bottle for my CYA testing.

    I tested it with the same parameters as I always test CYA, back toward the sun, waist-high, sunny day, in the same position in my yard as I've tested CYA for years.

    I'm not concerned about it, just found it interesting that my results would be about the same as another member's tests with the CYA standard solution.

    My pool's in cruise control, no problems, so I'll play with some different light/position settings for my CYA tests to see if I can obtain a consistent reading of 50 with the standard solution.
    - Pool Type: 15k Gal Gunite IG non-SWG / Built 1988
    - Pump: Pentair Challenger / Sweep Pump: Letro Model LA01N .75HP Single-speed / 6 hrs-day (1 turnover)
    - D.E. Filter: OEM: Nautilus (Pentair) #NS 36 / 36 Sq Ft / D.E. Charge: 3.6 Lb
    - Pentair 4-wheel Sweep LL505G - Booster Pump runs ~2 hrs/day

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    Re: CYA Standard R-7065

    Time to calibrate the tester
    Bob - Palm Beach by San Juan Pools. approx 5000 gals., Pentair 320 cartridge filter (all new guts installed by me), Goldline SWG, 'New to me' Kreepy Krauly Sand Shark, Intermec 104 Timer Test kit: TF-100 w/Speed Stir

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    Re: CYA Standard R-7065

    PM Dave (duraleigh) since this should be a fresh lot that he can double check himself to see if he can reproduce it. If you can take a photo of it at 50 ppm and at 30 ppm in the vial and post it, that would also be helpful.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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    Re: CYA Standard R-7065

    Well, I thought this issue was put to rest. Rebecca reports that the R-7065 she currently has in stock yields a result of 50 ppm. Let me check again with her, Scoop, and make sure the bottle you got was this current batch. Please send to me your name so I can track down the order. We'll get this sorted out.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: CYA Standard R-7065

    I just got off the phone with Rebecca. She tested the current batch of R-7065 and opened a new container that has not been re bottled yet.

    In both instances, she got 50 ppm. I have tested with her.....she and I test the same and get the same results.

    I will say this. Over the years, I have found that correct results are best obtained when you can see the dot just the tiniest bit. If I continue to add reagent to the viewtube, I will get a falsely high test. I know Taylor calls for total obscuration of the dot but my experience tells me that I will be too high if I go that far.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: CYA Standard R-7065

    I have done a calibration test with that 50 PPM cya reagent about 1 month ago and it reads 50.
    But it did re-think the way I interpret the test.

    With back to full sun and vial at waist high looking down:

    The best way to describe it is YES you do see a little of the dot but you cannot see
    the full circular edge "SHAPE" of the dot. you see just a little hint of the dot within the cloud of circulating solution...nothing more...at 50ppm

    When the dot is barely visible and distorted from the liquid..you are done pouring.
    16x32 IG Vinyl, 13,000 Gals. Hayward S-244T sand filter, SP2810X15 pump
    (1.5 HP motor) Raypak PR266AEN (266k btu) gas heater. TF-100 Test Kit.
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    Re: CYA Standard R-7065

    Quote Originally Posted by chem geek View Post
    PM Dave (duraleigh) since this should be a fresh lot that he can double check himself to see if he can reproduce it. If you can take a photo of it at 50 ppm and at 30 ppm in the vial and post it, that would also be helpful.
    Good idea (pics). I'll try to post those when I get a chance to retest.

    Quote Originally Posted by duraleigh View Post
    Well, I thought this issue was put to rest. Rebecca reports that the R-7065 she currently has in stock yields a result of 50 ppm. Let me check again with her, Scoop, and make sure the bottle you got was this current batch. Please send to me your name so I can track down the order. We'll get this sorted out.
    Done, thanks.

    Quote Originally Posted by duraleigh View Post
    I just got off the phone with Rebecca. She tested the current batch of R-7065 and opened a new container that has not been re bottled yet.

    In both instances, she got 50 ppm. I have tested with her.....she and I test the same and get the same results.

    I will say this. Over the years, I have found that correct results are best obtained when you can see the dot just the tiniest bit. If I continue to add reagent to the viewtube, I will get a falsely high test. I know Taylor calls for total obscuration of the dot but my experience tells me that I will be too high if I go that far.
    Thanks for the "dot" info. That's the first time I'd read that about the dot. I've always added the mix into the vial until the dot completely disappears.

    Quote Originally Posted by borjis View Post
    I have done a calibration test with that 50 PPM cya reagent about 1 month ago and it reads 50.
    But it did re-think the way I interpret the test.

    With back to full sun and vial at waist high looking down:

    The best way to describe it is YES you do see a little of the dot but you cannot see
    the full circular edge "SHAPE" of the dot. you see just a little hint of the dot within the cloud of circulating solution...nothing more...at 50ppm

    When the dot is barely visible and distorted from the liquid..you are done pouring.
    Thanks. I'll use this method the next time I test CYA. I usually test once a month during the summer months since, based on last summer's CYA results, it drops about 10 per month.
    - Pool Type: 15k Gal Gunite IG non-SWG / Built 1988
    - Pump: Pentair Challenger / Sweep Pump: Letro Model LA01N .75HP Single-speed / 6 hrs-day (1 turnover)
    - D.E. Filter: OEM: Nautilus (Pentair) #NS 36 / 36 Sq Ft / D.E. Charge: 3.6 Lb
    - Pentair 4-wheel Sweep LL505G - Booster Pump runs ~2 hrs/day

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    Re: CYA Standard R-7065

    Calibration test? I'm not sure I understand what you guys are talking about here???
    Mark
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    Re: CYA Standard R-7065

    You can buy the CYA 50 ppm Standard R-7065 which you use as a water sample with the CYA test. You should read 50 ppm in that test if the test is done correctly (and if the R-7065 is correctly 50 ppm CYA). It isn't really calibrating the test since the test doesn't use any instrument with any calibration. It's more for as an individual visually seeing when the dot disappears to get an idea of what 50 ppm CYA is supposed to look like when doing the test. It lets you adjust your technique or your interpretation of the test so that in some sense "you" are calibrated.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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    Re: CYA Standard R-7065

    HHMM, Maybe I should have said "Calibrate the testee"?
    Bob - Palm Beach by San Juan Pools. approx 5000 gals., Pentair 320 cartridge filter (all new guts installed by me), Goldline SWG, 'New to me' Kreepy Krauly Sand Shark, Intermec 104 Timer Test kit: TF-100 w/Speed Stir

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