Moisture Contents at Which soil has smallest plasticity is called limit. For determination purpose plastic limit is defined as the water content at which a soil will just begin to crumble when rolled into a thread of 3mm. Dia.
The complete set consists of one each. 1. glass plate 20 cm X 115 cm having ground ends and one side frosted. 2. Brass or stainless steel rod 3mm dia X 150mm long. 3. Flexible spatula. 4. Set of 6 moisture containers. 5. Porcelaine dish 150mm dia. 6. Plastic wash bottle 500ml.