Jiangyin Yangfan Ship Trading Co.,Ltd is one of the best seawater hydrometers manufacturers and suppliers in China, you can get seawater hydrometers free sample and buy discount products from our factory.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.CODEGraduationLengthCODEGraduationLength651341 6513421000-1030 "200mm 250mm651343 6513441000-1040 "200mm 250mm

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