Selenium (Se) Pure Plus Standard, 1 µg/mL, 5% HNO₃, 125 mL

Each standard is supplied with a comprehensive Certificate of Analysis that documents its quality and reliability.

Each standard:

• Analyzed by ICP-OES
• Analyzed by Classical Wet Assay
• 32 trace impurities analyzed by ICP-MS of the final solution and reported on the certificate
• Impurities reported at ppm level
• All Standards are prepared and certified under ISO Guide 34 and ISO 17025