Hydrometer & Sedimentation Testing (AS1289.3.6.3)

What is Hydrometer and Sedimentation Testing?

A Hydrometer analysis is a measurement method used to determine soil particle size in a sample. Hydrometer analysis is specifically for soil particle sizes that are less than 0.75 mm in diameter.

How does the testing process work?

To perform the test, a Hydrometer is placed in a container filled with a water and soil mixture and measurements are taken over time.

What is the NATA-accreditation for this type of testing?


What results can be drawn from the Hydrometer and Sedimentation Testing?

The Hydrometer analysis is a widely used method of obtaining an estimate of the distribution of soil particle sizes from the 0.075 mm sieve to around 0.002 mm.

What is it primarily used for?

Measuring the particle size distribution of fine-grained soils like clay and silt.

What types of projects would you utilise this type of testing on?

The Hydrometer test would be used when someone would need to know the particle size distribution of soils from the 0.075mm sieve to the 0.002mm. It would be more commonly used on fine grained soil. It is handy for use in geo investigation projects, as a lot of samples we get in for those type of jobs has PSDs done on them but end up with approx. 90% passing the 0.075mm sieve.

Which Coffey Testing branches can facilitate this type of testing?

Coffey Testing – Adelaide, Brisbane, Sydney and Perth labs can all facilitate this type of testing.

What are the benefits of being able to perform this type of specialty testing?

To be able to give our clients a full distribution of particle sizes that are less than 0.075mm.

Do you need Hydrometer and Sedimentation Testing for your next project?

Get in touch with the Coffey Testing teams here:

Need help with Hydrometer & Sedimentation Testing (AS1289.3.6.3)?

Get in touch with our friendly sales team today.

Hydrometer & Sedimentation Testing

Projects that used Hydrometer & Sedimentation Testing (AS1289.3.6.3)