If you are really concerned about the food safety of you and your family, glyphosate testing is a vital step that you can take to this end. The GlyphoCheck Strip Test will detect Glyphosate in water samples at concentrations between 2.5 ppb and 100 ppb, at which the test line exhibits moderate intensity. At levels greater than 100 ppb, the test line is extremely faint or not visible. The GlyphoCheck strip test results are interpreted visually by comparing the intensity of the test line to the intensity of the control line on the same test strip. Although the overall intensity of test strips may vary with different lots of test kit, it is the difference in intensity between the test line and the control line on one test strip that determines the test result. Please note that a control line must be present for a test result to be considered valid. Low to Moderate Positive Result A low or moderate positive result will produce a test line that is lighter than the control line. The degree to which the test line is lighter than the control line indicates the approximate concentration of Glyphosate in the sample. Strip test results should be determined within 5-10 minutes after completion of the strip test procedure. Test strips that have dried for more or less than the required time should not be used for results interpretation as line intensities may vary with drying time, potentially producing inaccurate results. Limitations of the Glyphosate Strip Test Mistakes in handling the test can also cause errors. Possible sources for such errors include Inadequate storage conditions for the test strip, extremely long or extremely short incubation time, and extreme temperatures during the test performance (lower than 10°C (40°F) or higher than 30°C (85°C).