Conforms to the accuracy requirements of ASTM hydrometers - No. 152H .
Length: 280mm (11”); Range: -0/60 g Lamount to 0.995-1.050.
Strong wooden box packing makes it not easy to damage, you can use it for a long time.
Conform to ASTM Specifications, Ideal for determining the specific gravity of soil, meets ASTM specifications. hydrometer is calibrated in a triple accredited ISO/IEC 17025:2005, A2LA accredited laboratory against equipment whose calibration is traceable to NIST.