Folks, I've read through some good articles on TFP but I can't find an answer to a question I have on how I should be doing the test...
When I'm testing the pool water (room temperature)....I do the 7ml pool water, and then fill to 14ml mark with R-0013. Then I shake for 30-35 seconds.
I hold the tube waist level, back against the sun. When I start pouring it in the tube....I pour it until the black dot disappears. Great right?
Here's where I'm confused: So the black dot has disappeared...BUT THEN if I wait about 15-20 seconds, the dot's BACK! I can definitely see it at about 30-45 seconds.
QUESTION: Should I continue repeating adding more of the liquid in until it disappears for good? OR should I use the reading after the first time it disappears?
Thanks in advance!!
When I'm testing the pool water (room temperature)....I do the 7ml pool water, and then fill to 14ml mark with R-0013. Then I shake for 30-35 seconds.
I hold the tube waist level, back against the sun. When I start pouring it in the tube....I pour it until the black dot disappears. Great right?
Here's where I'm confused: So the black dot has disappeared...BUT THEN if I wait about 15-20 seconds, the dot's BACK! I can definitely see it at about 30-45 seconds.
QUESTION: Should I continue repeating adding more of the liquid in until it disappears for good? OR should I use the reading after the first time it disappears?
Thanks in advance!!