Field Density Test Apparatus Sand Replacement. Sand Replacement Method Three sizes Available. 10cm (Small Size) 15cm (Medium Size) 20cm (Large Size) 10cm (Small Size) - Sand Replacement Method. Consists of Sand Pouring Cylinder, one calibrating container 10 cm dia amp a square tray of 30 cm x 30 cm with a central hole of 10 cm diameter. Sand Replacement Method Apparatus 4 Used to determine the in-situ density of fine graned compacted soil. The apparatus consists of sand pouring cylinder dia.100 mm with shutter made of cast aluminium and accurately machined, upper cylinder, metal tray with centre hole, calibrating container. The kit is composed by 1.