Durac Soil Analysis Astm Hydrometers, For Determining The Specific Gravity Of Soil, Each

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Conform to the accuracy requirements of astm hydrometers280mm (11 in.) Longlead free ballast and glassindividually serializedtemperature standardization: 68°f/68°forder infoshould you require an individual hydrometer calibration report, factory calibrated hydrometers or custom calibration services are available.Certificationsaccuracy traceable to nist and dkd/ptb