651343 – HYDROMETER SEAWATER 1000-1040, 200MM

IMPA 651343 – HYDROMETER SEAWATER 1000-1040, 200MM – A glass instrument for measuring the density and saturation of salt in seawater. A ballasted float carrying a scale that indicates density as related to fresh water. Zero is 1,000; the density of seawater is about 1,026, but varies, in different areas between 1,000 and about 1,040.