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Updated: Aug 11, 2026

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium
Published on: December 17, 2018
Long-term stability of a cyanmethemoglobin reference standard
Abstract:
A comparative analysis performed in late 1974 revealed that a cyanmethemoglobin secondary standard prepared by the laboratory at the Michigan Department of Public Health in 1966 was still suitable for use in hemoglobin assays. These results would suggest that the current one-year expiration time used for commercial standards could be extended considerably.
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