Revvity Unquenched Background Standards, 20 mL Vial

Unquenched Background Standards are used to optimize liquid scintillation counter settings and to check long term stability of the instrument. Each standard contains PPO/Dimethyl POPOP in scintillation grade toluene, is argon purged and is flame sealed in a borosilicate ampoule. Each standard has a cap designed for high reflectivity and ease of handling. Unquenched LSC standards are available in two sizes: standard size for use with instruments using standard 20 mL vials and Pico standards for small vial systems.