Dynamic Shear Rheometer (DSR)

Dynamic Shear Rheometer (DSR)
The Malvern DSR asphalt rheometer is proven as the benchmark system for Quality Control testing to industry standards in regulated markets worldwide.

Developed in close association with industry researchers to meet all instrument criteria and test protocols of AASHTO (American Association of State Highway and Transportation Officials) standards.

Compact, integrated unit designed specifically for ease of use and robustness in high throughput Asphalt binder (bitumen) test environments.

Air bearing and mechanical bearing options to provide robust and cost-effective measurement platforms for any industrial laboratory or remote field testing location.

Integrated fluid immersion cell specifically based on patented principle for temperature control of highly thermally-sensitive asphalt or bitumen samples.

Rapid thermal equilibration and elimination of thermal gradients in the sample - essential for consistent and reliable data, and optimized sample throughput.

Excellent temperature stability and accuracy, with a resolution of ± 0.01°C.

Rapid, robust manual gap set, with pre-set gaps for AASHTO tests for simplicity of use.

Active thermal mode to ensure constant gap is maintained for all temperature test points.

Plate measuring systems (both upper and lower plates) designed to comply with industry standards (AASHTO).

Dedicated AASHTO specification QC software package (TruGrade) available.


Torque range:Air Bearing: 10µNm to 10mNm. Mechanical bearing: 50µNm to 10mNm.
Torque resolution:1µNm
Position resolution:1µrad
Frequency range:10µHz to 100Hz
Temperature control range:5°C to 95°C (Total immersion cell) (range can be extended depending on circulator fluid)
Temperature accuracy:Better than ±0.1°C.(Total immersion cell)
Dimensions (W, D, H):23cm x 35cm x 60cm
Power:110V or 220V
Temperature (operating):15°C – 40°C
Humidity:35% - 80% non-condensing