Hi, I am using the TF100 and speedstir kit.
When performing the total alkalinity test, after about the 8th drop when i speedstir the solution it initially turns red, then back to green once it stops stirring.
It is only after the 14th drop that it stays red after stirring stops.
My question is, should the reading be 8*10 = 80 or 140? Do I use the "initial red" or "stays red" to indicate completion of the test?
Thanks so much,Aaron