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Hydrometers are for use in Sulfate Soundness Tests to measure specific gravity of the sulfate solution to ±0.001 SG. Meets ASTM C88, AAASHTO T 104, California Test 214 and PennDOT 510 standards.
MA-168 Hydrometer tests for sulfate soundness of Sodium with a range of 1.120–1.190.
MA-169 Hydrometer tests for sulfate soundness of Magnesium and has a range of 1.240–1.310.
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