User manual

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systems are used in infusion pumps, as they are not so selective regarding the tubing materials
used, and moreover, it is possible to use various sizes, etc. This system is depicted in Fig. 5.2.
Fig. 5.2: Rotation peristaltic head with the supporting trail.
Other differences in the construction can be found in the number of the individual
stoppers that get into contact with the tubing. There are many versions, the basic one being
with two stoppers, but there are also versions with 3 and more, up to 12 stoppers. These
versions are applied in other applications, such as chemicals dispensers, analytical apparatus,
etc., due to better tightness, lesser attrition of the tubing, they do not create too big pulse
waves, etc., yet they are more difficult constructionally speaking, as the tubing installation is
more complicated, etc. Multi-stopper system can be seen in Fig. 5.3.
Fig. 5.3: Eight-stopper system for the ISMATEC cartridges, used to dispense media in
process chemistry and biology.
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