Good video! Simple and to the point. When I ran my test and it turned blue before I put in any of the drops, I thought that I had done something wrong. But, it really just means that my water softener is working fine.

THANKS for the demonstration! I appreciate it.

Perfect video, thanks!

Thanks for the vid, made testing a snap. Mine didn't change so quick; it took a few more drops after it started changing to get to blue. Might have to do with the ridiculous hardness of our water. I measured it to be 23 GPG, yikes! Time to get a softener

I BOUGHT THE HACK 5B AND IT WORKS GREAT !!! THANKS TO THIS VIDEO, THE INSTRUCTIONS THAT COME WITH IT IS NOT CLEAR AT ALL ....

Hello ise everything as you said with the same hach ​​5b and nothing happened, my water is 6480 ppm that would be 390 grains per gallon is there another procedure for that amount?

hola ise todo como dijiste con el mismo hach 5b y no paso nada, mi agua es de 6480 ppm que serian 390 granos por galón ¿ hay otro procedimiento para esa cantidad ?

I don't have a test tube, can you please tell me how many ml of water is needed.?

The same result for 4 different water source: 2 different water purification, tab water and Deer part spring water.