*Peak Performance Inorganic Trace Metal Standard, Thorium (Th), 1000 μg/mL in 2% HNO3, 100 mL

CPI International's Peak Performance Thorium (Th) single-element standard is provided at a concentration of 1,000 ppm and a volume of 100 mL. All of our Peak Performance trace metal standards are produced in a controlled environment using ultra high-purity starting materials with NIST traceability and with ISO 17025 accordance. Each standard is verified instrumentally and gravimetrically and comes with a Certificate of Analysis