Viscograph-E
The Viscograph?-E is the standard instrument worldwide for measuring the viscosity of starch and of products containing starch...
Measure native starch (wheat, corn, potato, rice starch) reliably and reproducibly and get a complete profile of the rheological properties of your products:
- gelatinization and gelification properties of starch and products containing starch
- hot and cold viscosity
- stability of thickening agents or binders
- acid stability of starch
- extrudate testing
- measurement of industrial starch
- measurement of liquids, suspensions, pastes, etc.
Technical features:
- automatic test procedure
- storage of any number of temperature programs
- heating/cooling rates of 0.5...3'C/min (in certain sections up to 5'C/min)
- electronic speed control
- low-deflection torque measurement
- automatic adaptation of the diagram scaling to the viscosity measured
- comfortable measuring and evaluation software for all current Windows versions
Test Procedure
The sample is heated within a rotating bowl and cooled down again, both under controlled conditions. In conjunction with the Windows software, the inte-grated, self-optimizing temperature con-troller allows programming and storage of any temperature profiles with heating/ cooling rates of 0.5...3'C/min.
A measuring sensor reaching into the sample is deflected according to the viscosity of the sample in the bowl. This deflection is measured as torque.
For testing special temperature-stable starch types, a special pressure chamber will allow the evalution of higher temperatures (> 100'C).