BS 718:1979

Five series of hydrometers for liquids between 600 and 2000 kg/m³ at 20°C and three petroleum sub-series at 15°C. Surface tension, dimensions, permitted errors, guide to purchasers, corrections for opaque liquids, method of use, density of water from 0°C to 40°C. Relative density (specific gravity) hydrometers previously specified but not retained.