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I performed the test, and I see a horizontal line in the Control window but a vertical line or streak in the Test window. What is the result?

April 26, 2017CONTROL horizontal line Performed streak Test vertical window

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I performed the test, and I see a horizontal line in the Control window but a vertical line or streak in the Test window. What is the result?

1 Answer

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Posted

The line in the Test window must be the same, horizontal direction as the line in the Control window. If there is no horizontal line (even if there is a line or streak going up and down, perhaps through both the Test and Control windows), the result is negative (no surge). The vertical streak is sometimes caused by the test chemicals still migrating through the window, but it should go away in a few minutes. Remember to read the test after 3 minutes, and within 10 minutes of starting it.