User Manual

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The appearance of test strips may also be compared to the illustration to determine approximate sample
concentration ranges. Please note that the illustration is intended for the demonstration of test line to
control line intensity only. Results should not be determined by comparing the intensity of test lines
from test strips to the test line intensity of the illustration, as the overall intensity of test strips may
vary slightly with different lots of reagents. To obtain semi-quantitative results in the range of 0 – 20
ppb, solutions of known Cadmium concentration (control solutions) must be tested concurrently with
samples. Sample test line intensities can then be compared with control solution test line intensities,
yielding approximate sample concentrations. Do not use strips run previously to determine semi-quanti-
tative sample concentrations, as test line intensities may vary once strips are completely dry.
10. Additional Analysis
If necessary, positive samples can be confirmed by other conventional methods. A lateral flow reader
may also be employed to generate numerical readings from the visual result.