DIY alk standards:
DIY alkalinity standard
For folks who may want to evaluate the accuracy of their alkalinity test kits, here are two suggested ways to do it. One is DIY and one is a mostly commercial standard with one DIY step. Method 1 Standard solutions could be made with sodium bicarbonate, but it can be hard to be sure it hasn't...www.reef2reef.com
Thank you Randy. I just purchased this from amazon, and it is supposed to be delivered on thursday.