Meets ASTM D-422 and AASHTO T-88 specifications.
Plain form hydrometer has an approximate length of 280 mm.
The ASTM 151H is graduated with a range of 0.0995 to 1.038 in 0.001 divisions at 68° F for specific gravity.
The ASTM 152H has a range of -5 to +60 grams in 1 gram divisions at 68° F for grams of soil colloids per liter.
Hydrometer jars are used to suspend soil hydrometers in sodium hexametaphosphate solution for determining the amount of soil particles in a dispersed suspension. Jar is 18" high x 2.5" diameter marked for a volume of 1000 ml.