IRMM-643 sulfur-32 peak, nitrate solution standard

IRMM-643 sulfur-32 peak, nitrate solution standard

note

1. All expressed uncertainties are extended uncertainties U=k · uc, where uc is the combined standard uncertainty estimated according to the ISO/BIPM measurement uncertainty expression guidelines. They are given in parentheses and include a coverage factor k=2. They apply to the last two digits of the value. The certified values can be traced back to SI.

2. The peak isotope reference material IRMM-643 contains approximately 2 µ mol of sulfur in 5 mL of nitric acid solution in a flame sealed glass ampoule. The molar concentration is approximately 2.8 M nitric acid.

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