Twaddell Hydrometers, For use with liquids heavier than water such as milk, sulfuric acid and tanning solutions, Each

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Permanently marked with individual serial numbersOrder InfoA certificate of calibration is available; simply add the letter “C” to the end of the catalog number when ordering.CertificationsA certificate is provided to indicate traceability to standards provided by NIST™.ComplianceAccuracy meets or exceeds ASTM™ E 100 specifications, Calibrated according to ASTM E 126 specifications.