Shock Level FC Test "bounces" a little. Am I doing it right?

[SteveGo]

I just got my Taylor 2006 test kit, and have started my first SLAM.

With 50 ppm of CYA, I am maintaining a 20 ppm FC.

Following the directions, after adding in the DPD powder and stirring, I start titrating in the drops of reagent, and reach\
the point where the sample turns clear. I reach for the CC test reagent, and notice that the sample has turned ever so
slightly pink, as if it were bouncing back a little. Is this normal?

Do I keep titrating stirring, and waiting, or is this normal? From the instructions I thought the color change to clear was the indicator.
The pink color is very slight.

pre-slam numbers:
TA 180ppm
PH 7.5
CYA 50
CH 180 ppm
CC 0 ppm
FC 10 ppm






Thanks.

 

[DaninFLA]

if it went clear, you are done. if you let it sit it will turn pink again. even so, if one extra drop was the difference, that's only 0.5ppm. no biggie.

 

[jblizzle]

Like Dan said. Add drops until it is clear. Call that FC and start the CC portion of the test. Same with the CC count until it goes clear and you are done. If it sits, it will always go back to pink.

If the CC are high, that could bleed into the FC portion of the test.