My new house with a pool

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Originally Posted by BigDave

Don't let that gizmo stop you from ordering a K-2006. The FAS-DPD titration test will give you accurate, repeatable (useful) readings. Maybe you could do a comparison and let us know how well it works.

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LOL. I was going to get the K-2006 anyway and then do the comparison test.

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Originally Posted by PoolDoc

That's fine.

But make sure you do a double buffer calibration on the pH meter. Regardless of their cost, pH meters are USELESS without calibration OR if they have old or plugged electrodes.

And keep in mind that if you use the HACH DPD method . . . it is subject to the EXACT same problems as the Taylor 1004.

If you have a spec, you probably can do accurate dilutions. Test with OTO drops first: a DARK yellow OTO result is probably out of range for the HACH; orange certainly is. If you get a dark yellow or orange result, do a 1:3 dilution with distilled water, and multiply the HACH result x4 .

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I calibrated it this morning using a 4PH, 7PH & 10PH buffer. It cal'ed to with in .02 of each other. This HACH will test to 10 Cl anything above that will be off scale high.
This is the HACH we have. http://www.equipcoservices.com/renta...otometers.html

I work as an Operator at a Power Plant and we make our own Demineralized water and Potable water plus we have to do our own Boiler water testing. We have lots of cool testing equipment. LOL

Dave, given that somebody probably paid upwards of $2,000 for that thing . . . they might object to referring to it as a "gizmo".

But your point is correct. I fought that battle many times, with pool operators who struggled to accept the idea that they were going to calibrate an $8,000 pool controller with a $25 test kit. Spectrophotometer don't suffer the same sort of inherent 'drift' troubles controls or instruments using pH, ORP, or thin film electrodes -- but they are subject to a variety of other systemic errors. All too often, equipment operators fail to validate them, and then use them to generate useless or even dangerous results.

But, properly calibrated, such systems are capable of producing results almost as good as old-style buret titrations!

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Originally Posted by PoolDoc

... they might object to referring to it as a "gizmo".

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Fine. Sorry. Doohickey then.

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Originally Posted by SBR_GUY

... lots of cool testing equipment.

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And a Station Chemist as well I'd guess - convienient.

I owe you an apology SBR_GUY, I read your post too quickly and presumed that your poolRX friend had loaned you a strip reader (Hach makes 'em). My bad. We good?

Glad to hear you're ordering the K-2006, I'm sure you'll be happy with it.

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Originally Posted by bigdave

fine. Sorry. Doohickey then.

And a station chemist as well i'd guess - convienient.

I owe you an apology sbr_guy, i read your post too quickly and presumed that your poolrx friend had loaned you a strip reader (hach makes 'em). My bad. We good?

Glad to hear you're ordering the k-2006, i'm sure you'll be happy with it.

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lol. I never did like the strips. We do have those here at work also, but I refuse to use them.

OH and its NOT a doohickey its a Chingadera. LMAO

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Originally Posted by BigDave

Don't let that gizmo stop you from ordering a K-2006. The FAS-DPD titration test will give you accurate, repeatable (useful) readings. Maybe you could do a comparison and let us know how well it works.

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OK. I did my tests last night and here are the results. YES i added 1 chlorine tab (Trichloro-s-triazinetrione), when i get home im gonna test again and remove the tab and add liquid, we have 500 gallon totes of the stuff here at work.

HACH: .8 TC, .9 FC, .1 CC.
TAYLOR: 1-2 Cl, .5-1 CC, 7.7 PH, 120 TA.
ULTRAMETER II: 7.49 PH.

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Originally Posted by PoolDoc

Get the OTO, so you can have some reliable, if not super accurate, testing now. Later, the OTO will allow you to do very quick and easy testing (almost strip-like) in between K2006 full testing.

Oh. And don't over-test CYA: the K2006 is sort of short on CYA tests. This isn't a problem for experienced users, since they know CYA doesn't change rapidly or need to be tested every time. But new users sometimes blow through all the CYA tests in their first month, and have to buy refills.

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How do my reading look Doc.

HACH: .8 TC, .9 FC, .1 CC.
TAYLOR: 1-2 Cl, .5-1 CC, 7.7 PH, 120 TA.
ULTRAMETER II: 7.49 PH.

I think that if you want to compare your Taylor results to an accurate tester of another type, you would use the 25 ml sample. This will give you a CL(FL and CC) reading in 0.2 ppm increments. I don't' get your reported "1-2 CL, .5 - 1 CC.

At any rate, how your FC reading looks depends ENTIRELY on your CYA. Post that reading

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Originally Posted by nefretrameses

I think that if you want to compare your Taylor results to an accurate tester of another type, you would use the 25 ml sample. This will give you a CL(FL and CC) reading in 0.2 ppm increments. I don't' get your reported "1-2 CL, .5 - 1 CC.

At any rate, how your FC reading looks depends ENTIRELY on your CYA. Post that reading

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The 1 - 2 Cl reading is based off the color chart in the Taylor test kits. The HACH spectrophotometer and the Ultrameter read down to .00 Also im not trying to be an ass, but read up on these testers then you will know more than you are commenting about. HACH D 2400 spectrophotometer and the Ultrameter II

As for the CYA I dont have a kit that reads that yet. Hope to make it to the store in the next few days to get one.


Taylor reads:
.5 - 1
1 - 2
ect.....