Have the samples been exposed to a lab doing 14C enrichment experiments?Exposure to 14C enrichment experiments does not disqualify service, it just dictates how the UCSC SIL will handle your samples.
Are the samples isotopically enriched?
Atom Percent calculations: Where AR is the Absolute Ratio (constant) and Delta (δ) is the value in permil to be converted into atm%. AR = Absolute ratio of mole fractions.
Add comments about anything notable about the samples (e.g., very small forams). If this is a time sensitive request. Efforts will be made to meet your deadline, but sample throughput is not guarenteed. UCSC Stable Isotope Lab.