740 Portable Suspended Solids
20 Preparation of Fullers Earth
The Fuller's Earth is supplied in a sealed 20g package, the package contains sufficient
to make a 20,000 mg/l (20 g/l) solution when combined with 1 litre of water. Alternate
solutions can be obtained by increasing the amount of water used as shown in the
table below.
Solution Required (g/l)
Add pack to water (litres)
2.5 8.0
5.0 4.0
10.0 2.0
20.0 1.0
40.0 0.5
The following points should be observed when preparing and using Fullers Earth
solutions:
The water used should be freshly distilled or de-mineralised
Ensure the container used for the solution is clean
During preparation and use, keep the solution covered to prevent contamination
When using the solution it must be continually stirred to ensure accurate and
consistent measurements and to prevent settling
172430IM-Iss07 Issue Date 23/10/2014 Page 41of 46
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