Plastic Specific Gravity Hydrometers Plastic Specific Gravity Hydrometers for measuring the specific gravity liquids heavier than water. Polycarbonate body offers shatterproof, glass-like clarity for ease of reading. Commonly used in industries such as food and beverage, chemical, pharmacology, transportation, refrigeration and more. Manufactured to exacting standards for accuracy, uniformity, and dependability. Each hydrometer is individually serialized and provided with a calibration report traceable to NIST standards. Length: 300mm Application: Specific Gravity Standard: NIST Scale Range Divisions 0.650 to 1.000 0.005 1.000 to 1.220 0.002 1.200 to 1.420 0.002 1.400 to 1.620 0.002