Percentage Refusal Density (PRD) is defined as the ratio of the initial dried bulk density of the sample to the final density (refusal density) expressed as a percentage.


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PRD Split Mould and Baseplate

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Vibrating Hammer

Accessory - suitable for compacting asphalt samples.

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Expansion Tank 4 Gallon Capacity

Spare for 34-8100/09

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225 Litre Drying Oven

The Drying Ovens are designed for drying large quantities of soils and aggregate samples and maintains temperature in accordance with BS and ASTM requirements. 

  • Fan assisted circulation 
  • Manual overheat reset 
  • Low temperature uniformity 
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Buoyancy Balance 16 kg X 0.1 G

The density of hardened concrete specimens such as cubes and cylinders can be quickly and accurately determined using a Buoyancy Balance. The Buoyancy Balance system developed by ELE consists of a rigid support frame, incorporating a water tank mounted on a platform. The water tank has internal dimensions of 380 x 240 x 280 mm (L x W x H). A mechanical lifting device is used to raise the water tank through the frame height immersing the specimen suspended below the balance. The balance supplied calculates the specific gravity of the sample automatically. The balance may also be used as a standard weighing device, thus providing a versatile and comprehensive weighing system in the laboratory.


- Lifting frame for Buoyancy balances

- Expansion tank 4 gallon capacity

- Electronic Balance 16kg x 0.1g with auto density calculation 


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