Recent content by Panaxdave

Had no idea that existed. Looks new, so maybe that's why.

I like the ideas. I was thinking about some way to do a demo about CYA. Funny you mention the aeration. I do a demo with anatomy students in which I exhale into water and show the pH drop. The next day the pH has risen a bit, then we can discuss the role of CO2 as it pertains to pH balance...

Appreciate all the input. Actually got more than I anticipated I would. Cost is always something to consider at a community college, for sure. That said, we've had con ed classes in the past where up front costs were much higher than the cost of a test kit and those classes filled. One...

This might come across as an odd post but I thought I'd give it a try and see what folks thought of the idea. I teach biology at a community college. Often times I am asked if I'd like to teach a continuing education class and those classes can be just about anything people find interesting...

One of the big problems I, and others, have with those strips is, what in the heck color am I looking at? Is it blue/purple or purple/blue? Lavender maybe? That color differance might be enough the throw you off a couple ppm for chlorine which might put you out of range for your pool...

Thanks for that reply! Spec 20s are in line so that'll be an issue. Not sure what our Chem dept has but I'll check. I've got some time on my hands since it's the summer semester, so I might play around with some simulated pool water at various CYA levels and see what I get. As usual, and the...

I teach biology at a local community college and, because of that, have access to some older spectrophotometers (Spec 20s for those of you that have used them). I often times use them to get growth curves for bacteria. Is there any reason why I couldn't take some standardized cya solutions...

I wish this could happen because I need to lower CYA.