sfsuphysics
Supporting Member
Ok so today I want to test my alkalinity to a little higher accuracy than my test kit provides. My solution use 20mL of tank water instead of 5mL and that should increase my resolution by a factor of 4 correct?
So I'm adding drops, now each drop = 0.25 dKh.
Problem is I'm now unsure when I'm at my final reading. Due to the increased resolution the color change from blue to yellow is quite a bit more gradual. Do I call it done when I see the first sign of "green" (i.e. mixture of blue and yellow) or do I continue until the color doesn't change anymore? Because that can be quite a few drops difference.
So I'm adding drops, now each drop = 0.25 dKh.
Problem is I'm now unsure when I'm at my final reading. Due to the increased resolution the color change from blue to yellow is quite a bit more gradual. Do I call it done when I see the first sign of "green" (i.e. mixture of blue and yellow) or do I continue until the color doesn't change anymore? Because that can be quite a few drops difference.