TA Instruments Nano ITC Series, Getting Started Manual

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Nano ITC Getting Started Guide Page 15
Each syringe needle is equipped with a flattened, twisted paddle at the tip, which does the actual stirring of
the solutions in the cell. The stirring paddle spins clear of the sides of the reaction vessel. When stirring is
activated, the contents of the reaction vessel are stirred continuously until the end of the experiment or
until stirring is turned off.
Stirring is controlled by a stepping motor mounted inside the calorimeter. This type of motor is used
because of its very constant and adjustable speed. The motor drives the rotating shaft of the buret, which
holds the titrant syringe.
Buret Assembly
The buret accurately delivers the titrant to the reaction vessel at specified volumes and intervals. The
assembly also functions as the stirring mechanism for the reactants in the cell when the titrant syringe is
installed. The rotating shaft on the lower portion of the buret assembly holds the titration syringe in place,
and has two external o-rings which provide the friction necessary for the stir motor to rotate the shaft
during operation.
See online help for details on using the buret.
Options and Accessories
A degassing station is available to complement your Nano ITC instrument.