Hanna Alkalinity!!

[shrimpchips]

Woooo weeeee! I'll be getting one of these for sure!

Can't wait for the Calcium version to come out!

http://glassbox-design.com/2010/hann...er-alkalinity/

[lastlight]

oh that's exciting. When Ca comes out I'm going to get both. Do they have a Mg planned?

[Delphinus]

That is AWESOME. I remember reading about how an alkalinity probe (like that used for controllers etc.) would likely never happen on account that the physics just isn't there (or maybe practical) to convert an alkalinity value into a 4-20mA signal but when you stop to think of it, all hobbyist alkalinity test kits are colour based anyhow so why not a colorimeter based tester instead?

The real question I have is how easy is it to use. Of all the testing available, alkalinity has to be one of the easiest tests one can do so to compete with that it has to offer something more. If ppm of 0 to 250 translates to dKH 0 to 14 and a resolution of 0.1 on the unit means a resolution of about 0.2 dKH, with an accuracy of 5% in the 4.2 to 14 range, that means you can tell if your tank fluctuates from 8.0 to 8.1. Which might be useful, I suppose (to be honest though I am happy to the nearest whole dKh point). But if it's super easy to use .... sure sign me up!

[lastlight]

Well what's the cost for each test with these style units? You need to buy a box of something...like reagents or something don't you?

Once you have the unit aren't these things a lot cheaper per test than say elos?

[Delphinus]

Good point - that would probably speak more than a 0.1 accuracy of a dKH reading.

[lastlight]

Well what does it cost to use the phosphate checker? It's like $50 for the meter I think and then what do you need and how much is that one per test? I could look it up I guess but...