@misc{misc, author = {Ashley Russell and Carolyn Burdette and Johanna Camara and Nathanael Heckert and Jennifer Hoguet and Kevin Huncik and Jared Ragland and Elena Wood}, title = {NIST Special Publication 260 NIST.SP.260-256 Certification of Standard Reference Material\&$\#$174;s 3672a \& 3673a: Organic Contaminants in Smokers{\textquoteright} Urine (Frozen) \& Organic Contaminants in Non-Smokers{\textquoteright} Urine (Frozen)}, year = {2025}, month = {2025-05-14 04:05:00}, publisher = {Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD}, url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=959829}, doi = {https://doi.org/10.6028/NIST.SP.260-256}, language = {en}, }