The balloon density apparatus determines the in-place density of soil using a volume displacement method, similar to the sand cone density method. The apparatus consists of a graduated cylinder, an aluminum guard, reversible aspirator type pump, density plate and 10 rubber balloons. Available in three sizes.

Applicable Standards:
ASTM D 2167
AASHTO T-205

S-130	Balloon Density Apparatus, 1/20 ft³