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319 Multi-purpose CST
Meter
Description
The Triton Type 319 Multi-purpose CST can be used with either
5 single radius test heads or with one multi-radii test head for
the rapid assessment of resistance to filtration.
Single radius
test heads
In this mode of operation it is possible to test a number of dosing
quantities at the same time. So reducing the overall test time or
allowing for more discrete tests to be performed. In each case the
Multi-CST operates in a very similar method to the Type 304B or
Type 304M CST units.
Each Type 319 CST
is supplied with 1 single radius test head; any others are purchased
as separate items.
Multi-radii test head
The multi-radii test head has 5 probes set
at intervals to give the same volume between each probe. This is
illustrated in the chart below. It has been shown that for a wide
range of different types of sludge there is an approximately linear
relationship between the specific resistance to filtration, using
the standard Buchner funnel apparatus and the multi-radii test head.
When using the multi-radii
test head the Type 319 unit automatically divides the time by the
probe number. Since filtration fulfils the classical parabolic relationship
between time and volume of filtrate, then the arithmetic difference
in the reading is constant and directly proportional to the specific
resistance.
The Multi-CST is
supplied with 2 boxes of filter paper as standard.
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