2 composite sampling, 4 sinker / strainer, Composite sampling – Campbell Scientific CVS4200 / BVS4300 Stationary Samplers User Manual
Page 24: Sinker / strainer, 4. discrete, Removable, Bottle tray (24 bottles), 5. composite two gallon bottle with lid
CVS4200 / BVS4300 Stationary Samplers
FIGURE 5-4. Discrete removable bottle tray (24 bottles)
5.3.2 Composite Sampling
Composite sampling is for drawing water samples into one large container.
This is the simplest way of taking samples and typical for most situations
where a sampler is set up to measure effluent in one location. It is also
significantly less expensive than discrete sampling.
FIGURE 5-5. Composite two gallon bottle with lid
5.4 Sinker / Strainer
The intake hose includes either a lead sinker or stainless-steel sinker/strainer.
The sinker or sinker/strainer is intended to keep the sample line fully
submerged in the source liquid. The stainless-steel sinker/strainer should be
used in samples with material that may clog up a normal sinker, or where the
standard sinker could stir up bottom sediment.
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