Measuring KH & GH levels

[yhbae]

I have AP testing kit that I use every day for reading chemical levels. As part of the kit, includes bottles for measuring general hardness and alkalinity (KH). I always used to think that if it changes color after 1 drop, then it should read 1dH, and after 2 drops, then 2dH, etc. But I just realized what if the water is 0dH?

So my question is, say if the water turned its color on the 2nd drop, should this be considered as 1dH or 2 dH?

Appreciate any feedback!

[PumaWard]

One drop=one degree... So if it changes color on the first drop it could be either 0 or 1. I least I think that's how it goes :D I have the same test kit, I think, also :)

[yhbae]

Thanks for the confirmation... :D