PLASTIC LIMIT SET IS : 2720 (Part – VII) ASTM D 427, BS : 1377 AASHO 190. Moisture contents at which soil as smallest plasticity is called limit. For determination purpose plastic limit is defied as the water content at which a soil will just begin to crumble when rolled into a thread of 3mm. dia. Specifications:The complete set consists of one each: - Glass plate 20cm x 115cm having ground ends and one side frosted. Brass or stainless steel rod 3 mm dia x 150mm long. 1. Flexible spatula. 2. Set of 6 moisture containers. 3. Porcelaine basin 150mm dia. 4. Plastic wash bottle 500 ml..