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Dear NIST Standard Reference Material Customer:
This letter is to notify the users and purchasers of NIST SRM 3290 Dry Cat Food of the revised Certificate of Analysis (COA) dated 09 July 2021. The certificate was revised to include the following changes:- removed reference value for retinol (vitamin A) based on observed instability
- downgraded certified values for fatty acids to reference values to properly reflect traceability and moved from Tables 1 and 4 to Table 5
- re-numbered tables accordingly
- editorial changesDear NIST Standard Reference Material Customer:
This letter is to notify the users and purchasers of NIST SRM 3290 Dry Cat Food of the revised Certificate of Analysis (COA) dated 09 July 2021. The certificate was revised to include the following changes:- removed reference value for retinol (vitamin A) based on observed instability
- downgraded certified values for fatty acids to reference values to properly reflect traceability and moved from Tables 1 and 4 to Table 5
- re-numbered tables accordingly
- editorial changes
