Industrial
Battery Electrolyte Levels D5040 - Traditional Syphon set Range 1.100 to 1.400 sp.gr.
Pack
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Glass Draft Survey D4040 - Density range 0.990/1.040 kg/lt complete with Certificate of  more info
Metal Draft Survey D6700 - Gilt plated brass hydrometer / Density range 0.990/1.040 kg/  more info
Potato Hydrometers D4500 - Range 17% to 25% dry matter
Pack Size:1
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