I took a sample in a plastic bottle from the pool water and experimented with the FC - CC test using the 25 and 10 mark.
(25 mark) 36 drops x 0.2 = 7.2 FC
(10 mark) 17 drops x 0.5 = 8.5 FC
On both test CC was zero because water stay clear didn't change to pink. why the results are different? They should
show the same result or not?