Changes

# Add water to around 3/4 full,

# Add water to around 3/4 full,

# Secure cap and shake,  

# Secure cap and shake,  

# Leave for at least 30 minutes until the water is clear - longer is better, so overnight when possible,

# Leave for at least 30 minutes and until the water is clear - plan to run the test overnight when possible,

# Examine the layer of sediment - if > 3 mm has been washed from 5 cm of product, reject the material,

# Examine the layer of sediment - if > 3 mm has been washed from 5 cm of product, reject the material,

Note that the sediment may collect on top of, or at the bottom of the construction material.  

Note that the sediment may collect on top of, or at the bottom of the construction material.  

==External references==

==External references==

*Heger, S. (2014). Critical Aspects During System Installation and Inspection General equipment considerations. In PMSA conference. Retrieved from http://www.psma.net/pdf/14/conference-presentations/Keys_to_Installation_(Heger).pdf

*Heger, S. (2014). Critical Aspects During System Installation and Inspection General equipment considerations. In PMSA conference. Retrieved from http://www.psma.net/pdf/14/conference-presentations/Keys_to_Installation_(Heger).pdf