Hubbard Specific Gravity Bottle

Used for road oil and tars, soft tar pitches, asphalt cements, drying oils, resins and related materials. The 24/12 solid stopper is concave on the underside with a 1.6 mm bore to allow air to escape. Bottle capacity is 24 ml. Complete. (ASTM D-70, D-234, D-801, D-802, D-856, D-1429, D-1963, D-2320; AASHTO T-43, T-228)