I have a ps233 that I purchased late in the season last year. I only used it once at the end of September. I wish I had known about the new kit coming this year because I have a swg and really need the salinity test in the spring after a full winter of rain.

Anyhow, my question is really about the alkalinity test...

The sample starts pink with pink floaties in it before adding the r-0012. When I added the r-0012, there was a point at which the sample turned violet (40 drops). Next it went into a phase when it turned blue but the floaties were still pinkish (49 drops). At 52 drops, even the floaties are blue. What point am I actually measuring at?