1. Open the valves in the standpipe and the bottom outlet. Ensure that the soil sample is fully saturated without any entrapping of air bubble before startingthe test.
2. Fill the standpipe with water keeping the valves V1 and V2 open and allow the water to flow out through the outlet pipe for some time and then close thevalves.
3.Select in advance the heights h1 and h2 for the water to fall and determinethe height h1h2 and mark this height on the standpipe.
4. Open the valves and fill the standpipe with water up to height h1 and start the stopwatch.
5. Record the time intervals for water to fall from height h1 to h1h2 and from h1h2 to h2. These two time intervals will be equal if a steady flow condition has been established.
6. Repeat the step (e) at least after changing the heights h1 and h2.
7. Stop the test and disconnect all the parts.
8. Take a small quantity of the sample for water content determination.