Tinius Olsen

Liquid Limit Device


The Liquid Limit is the level of water content at which soil changes from liquid to a plastic state. From an instrumentation perspective, the Liquid Limit is measured as the point where two halves of a soil sample flow together when jolted in a particular fashion. The equipment consists of a brass cup, which is repeatedly dropped a distance of 1cm onto a hard rubber base.
In a typical procedure, the soil sample is placed in the cup and a groove applied down the center of the sample using the Casagrande grooving tool and gage block. The cup is raised and allowed to fall a distance of 1cm onto a hard rubber base, at a rate of two drops per second, during which the groove closes up gradually as result of the impact. The number of drops required for the groove to close is recorded.
Applicable Standards: ASTM D4318; AASHTO T89, T90; BS 1377; IS 9259.

Features & Benefits

  • High quality design that ensures consistent results
  • Compliant with most relevant international standards
  • Motorized version with an integrated counter available
  • Supplied as standard with TO-04102 grooving tool and gage for BS and TO-04101 ASTM grooving tool
  • Ordering information

    For BS Standards:

  • TO-040-BS-01 Motorized Liquid Limit Device for 110V 60Hz
  • TO-040-BS-02 Motorized Liquid Limit Device for 220V 60Hz
  • TO-040-BS-03 Motorized Liquid Limit Device for 220V 50Hz
  • TO-041-BS Manual Liquid Limit Device
    For ASTM Standards:

  • TO-040-ASTM-01 Motorized Liquid Limit Device for 110V 60Hz
  • TO-040-ASTM-02 Motorized Liquid Limit Device for 220V 60Hz
  • TO-040-ASTM-03 Motorized Liquid Limit Device for 220V 50Hz
  • TO-041-ASTM Manual Liquid Limit Device
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