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Plastic-shrinkage limit testing equipment for all plastic and shrinkage water content needs. Plastic limit measures water content when a soil can no longer be rolled into 1/8″ diameter threads without crumbling. Plastic limit subtracts from liquid limit to establish the plasticity index. The plastic limit test includes all components to perform the plastic limit test in accordance with ASTM and AASHTO standards. Shrinkage limit measures water content where further loss of moisture does not cause a decrease in volume of a specimen. Samples for shrinkage limit tests usually take from a larger sample prepared for liquid and plastic limit tests.