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Best Thomas HydrometersFrom leading brands and best sellers available on the web.
#1
Thomas API ASTM Thermo Hydrometer,

Thomas API ASTM Thermo Hydrometer, 19 to 31 degree API Range, 0 to 150 degree F, 380mm Length

Thomas

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#2
Thomas Scientific 618040540, DURAC

Thomas Scientific 618040540, DURAC Baume Plain Form Hydrometer, 49/61 Degree, 12" Length

Thomas

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#3
Thomas Scientific 618041040, DURAC

Thomas Scientific 618041040, DURAC Baume Plain Form Hydrometer, 35/70 Degree, 12" Length

Thomas

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