TY - GEN AU - Russell, Ashley AU - Burdette, Carolyn AU - Camara, Johanna AU - Heckert, Nathanael AU - Hoguet, Jennifer AU - Huncik, Kevin AU - Ragland, Jared AU - Wood, Elena C2 - Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD DA - 2025-05-14 04:05:00 DO - https://doi.org/10.6028/NIST.SP.260-256 LA - en PB - Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD PY - 2025 TI - NIST Special Publication 260 NIST.SP.260-256 Certification of Standard Reference Material®s 3672a & 3673a: Organic Contaminants in Smokers' Urine (Frozen) & Organic Contaminants in Non-Smokers' Urine (Frozen) UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=959829 ER -