6100CR Refrigerated Sampler - Isco

6100CR Refrigerated Sampler
Section 3 Installation of the Sampler
3.3 Event Mark and Bottle
Number Timing
The event mark and bottle number are digital signals the
sampler generates to send to a Flow Meter. This digital information
is converted by the flow meter to marks and text on the
flow meter’s plotter chart. Thus, when you review the chart
generated by the flow meter, you have a hard copy record not
only of level and total flow, but of when the samples were
taken (the event marks) and into which bottles the samples
were placed (the bottle number).
3.3.1 Sample Considerations There are certain conditions that can affect the quality of the
samples gathered by the 6100CR. Most of these are items of
common sense, but they will be discussed here to help ensure
that your installation takes accurate and representative
samples.
As much as possible, samples should be free of air other than
what is normally dissolved in the stream. Avoid situations that
cause the sample to be unrepresentative by either adding or
removing air from the stream.
The sample bottles have Teflon® caps. Teflon typically cannot be
wetted by liquids with high surface tension. An example of this
type of liquid would be laboratory-grade deionized water.
If the sample cannot wet the Teflon caps, bubbles of air may
remain on the surface.
3.4 Handling the Samples When you have finished a sample routine and all 24 bottles are
full, you will need to ship the rack to the laboratory for analysis.
3.4.1 Cooling the Samples To preserve the integrity of the samples, you must keep them
cold until they reach the lab. Heat readily drives volatile
organics from solution. If you intend to transport the bottle rack
to the lab yourself, remove the stainless steel cover and fill the
cavity between the bottles with chipped ice; then replace the
cover to hold the ice in place. Put the bottle rack in the styrofoam
carrier and pack ice chips in the area between the bottle rack and
the inside walls of the styrofoam carrier.
3.4.2 Shipping the Bottle
Rack
To ship the bottle rack to the testing laboratory, follow the same
procedure as described above, except for the use of ice. After the
samples are collected, remove the stainless steel cover plate.
Pack the inside of the bottle rack with gel-packs, a product that
absorbs heat like ice, but is packaged in plastic bags, that remain
flexible and leak-free. Place the bottle rack inside the styrofoam
carrier and pack more gel-packs between the bottle rack and the
walls of the styrofoam carrier. Replace the stainless steel bottle
rack cover. Put the lid on the styrofoam carrier. Place the carrier,
with the bottle rack inside, in the cardboard shipping carton
Teledyne Isco originally shipped the carrier in.
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