PerkinElmer US LLC Tungsten (W) Pure Standard 1000 µg/mL H2 - N9300163

Perkin Elmer - Tungsten (W) Pure Standard, 1,000 µg/mL, H2O, 500 mL. Each Single Element Calibration Standard for AA and ICP-OES is supplied with a comprehensive Certificate of Analysis that documents the quality and reliability.