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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 ASTM 151H Soil Hydrometer 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 152H Soil Hydrometer 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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