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Hydrometers measure suspended solids in sedimentation cylinders over time periods of up to 24 hours and are used in hydrometer analysis of soils to test distribution of soil particle size.
SA-1 Soil Hydrometer, ASTM 151H is graduated to read specific gravity. It has a range of 0.995—1.038 in 0.001 divisions at 68°F (20°C). This hydrometer comes with a NIST traceable certificate of calibration.
SA-2 Soil Hydrometer, ASTM 152H measures in grams per liter (g/L) of suspension and has a range of -5 — +60 g/L, in 1g/L divisions at 68°F (20°C). It is also supplied with a NIST traceable certificate of calibration.
SA-2: -5 — +60
SA-1: 0.001 at 68°F (20°C)
SA-2: 1g/L divisions at 68°F (20°C)
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