The latest modular Instron CEAST Melt Flow Testers perform measurements according to ISO 1133-2.
The CEAST Melt Flow Testers provide measurement of the flow properties of plastics according to ASTM D1238 and ISO 1133.
The CEAST MF30 includes a weight magazine and weight lifter (available as an option for MF20).
The weight magazine contains a complete set of 8 test masses ranging from 0.325 kg (piston mass) up to 21.6 kg for testing a wide spectrum of materials, from fast-flowing masterbatches to highly viscous elastomers or filled thermoplastic polymers.
A mechanical system, the newly developed Manual Mass Selector, enables pre-selection of the required test mass, thus facilitating preparation and execution of the tests.
All test masses remain installed on the machine at all times. This eliminates the need to handle and apply heavy test masses and significantly enhances the safety of the laboratory staff.
A further standard feature of the MF30 model (not available for MF20 models) is a high-resolution load cell for controlled compacting of the material prior to the start of the test, with a maximum force of 750 N.
Also included in the test system as part of the standard equipment is a high-precision encoder, which permits the controlled extrusion of the melt to a defined height. The software supplied moreover enables purging of the barrel at the end of a test, specifically when testing low MFR materials.
The MF20 is offered as a basic instrument to be configured with a variety of options, such as a manual or motorised melt cutting device and a high-resolution digital encoder for MVR measurements according to ASTM D1238, Methods B and C (included as standard on MF30 models).
Depending on the application in hand, both models can be extended with additional modules, including:
A die plugging device to prevent material flowing during pre-heating
A nitrogen blanket device for testing hygroscopic materials
An acid-resistant version for chemically aggressive materials
CEAST VisualMelt Software for storage, analysis and graphical presentation of results.