Due to the modular design philosophy the SVT models can be combined with different temperature controlled measuring cells and various capillaries.
Peltier element based temperature controlled measuring cell MC-TPC 25 with removable observation windows and TCU temperature controller
The SVT 25 can be equipped with different temperature controlled measuring cells. Inside of the measuring cell a gas (preferably helium) is used as a heat conductor between the heat source and the capillary. Liquid circulation based, Peltier element based and electrical heating based temperature control systems are available. Every measuring cell is easily mountable and includes the water-coolable high-dynamic measuring drive as well as the quick-clamp device for holding the capillary. Additionally the observation windows made of special optical glass can be easily removed by opening just two knurled screws and are easy to clean.
Samples can be easily placed inside the SVT, within seconds, due to fast-exchange capillaries with perfect fitting accuracy. Hence the highest throughput rates can be assured. In order to avoid extensive cleaning procedures disposable glass tubes with corresponding holders are also available.
The fast exchangeable capillary FEC 622/400-HT is the standard capillary for use with the spinning drop tensiometers of the SVT series:
The disposable fast exchangeable capillary FEC-D consists of a special holder and disposable glass tubes.
The disposable fast exchangeable capillary FEC-D/B consists of a special holder and disposable glass tubes. Due to its special capillary design and a resulting higher pressure tolerance the FEC-D/B can be used with water-based solutions at up to 130 °C.
With special syringes and needles the capillaries for the SVT can easily be filled with the outer and inner phases.
To ensure that the SVT always produces reliable results, accessories for referencing and validating the measuring system are available.
The diameter reference set DRS consists of four reference standards made of polypropylene. The standard is placed into a liquid filled capillary. The set comprises the following diameters:
Diameter Reference Set
The validation standard VS-SVT is a specially made metal rod that is placed into the SVT measuring chamber instead of a capillary. Due to its precisely manufactured diameter the measuring system can be validated by measuring the diameter of the standard.