2. Let the sample extraction stand for 1 minute.
3. Take out the cassette from the foil pouch and horizontally place it on a dry surface.
4. Vertically drip 3 drops of sample extraction into each sample hole, one drop one second.
5. If the migration has not appeared after 1 minute, add one more drop of the liquid into sample hole.
6. Interpret the result in 5-10 minutes. Result after 10 minutes is considered as invalid.