Hi All!
My question is this, at what elapsed time do you read the results of this test? The instructions state between 5 and 8 minutes. I see a definite darkening of the test from 5 minutes to 8 minutes. To my eyes the difference is at least 1ppm.
Should I shoot for say 6.5 minutes?
Thanks for your input!!
My question is this, at what elapsed time do you read the results of this test? The instructions state between 5 and 8 minutes. I see a definite darkening of the test from 5 minutes to 8 minutes. To my eyes the difference is at least 1ppm.
Should I shoot for say 6.5 minutes?
Thanks for your input!!