I hate this OTO test, is Ben's better?

[ShelleyAnn]

So I added 3 gal of bleach last night to shock the pool to 15 trying to head off a problem that may be brewing. It's too high to read on my little HTH kit so I did the shot glass method. So now my color is in between the 3-6 and 5-10 range. This means I have somewhere between 6 and 30ppm. Wow, that's helpful. Is Ben's kit any better at pinning down an exact ppm?

Shelley

[aylad]

Yep, Ben's kit tests up to 50 ppm by a color change from pink to clear.

Janet

[ShelleyAnn]

I'm afraid my eyes aren't cut out for this, can you easily pinpoint the ppm?

[EricF]

It is much easier with the DPD powder test in Ben's kit. The color change is obvious for most people.

EricF

[prh129]

The OTO test is hard to match the color as I find the shades get pretty subtle above 2. Ben's test kit has the OTO test but also has an FAS-DPD test which is the test Janet talks about. That one is much easier to be accurate with as you add drops of a reagent until the color of the solution changes so it is easy to nail down an exact measurement.

Ben sells the FAS-DPD test as a separate item on the poolsulutions page if you don't want the buy the whole kit.

Peter

[ShelleyAnn]

Thanks all, can't wait to get the kit. It's our first month with our first pool and it sounds like the end all and be all.

Shelley

[prh129]

sounds like you're all set. Happy swimming!

Peter