제목 | NIST SRM 89 Update |
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작성자 | 오디랩 (ip:) |
NIST SRM 89 Certificate of Analysis UPDATEDear NIST Standard Reference Material Customer:
This letter is to notify the users and purchasers of NIST SRM 89 Lead-Barium Glass of the revised Certificate of Analysis (COA) dated 26 April 2021. This revision includes the following changes: replaced recommended percentages for constituents to certified values in Table 1 added uncertainty estimates for certified constituents reassigned loss of ignition (LOI) and zirconium dioxide (ZrO2) reference values as non-certified values in Table 2 added uncertainty estimates for non-certified constituents editorial changes Technical questions or concerns should be directed to Nicholas Sharp nicholas.sharp@nist.gov or 301-975-3926. Please replace your existing SRM 89 COA with the revised certificate that is available on the NIST SRM web site at https://www.nist.gov/srm. |
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첨부파일 | NIST SRM 89.pdf |
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