General description

This Standard Reference Material (SRM) is intended for use in evaluating chemical methods and in calibrations associated with optical emission and x-ray spectrometric methods of analysis. SRM is a finely powdered material and must be kept in a tightly sealed bottle when not in use. For more information,please refer to the COA and SDS.SRM 691_cert SRM 691 _SDS

Legal Information

NIST is a registered trademark of National Institute of Standards and Technology

SRM is a registered trademark of National Institute of Standards and Technology