Secondary Drinking Water Metals with 4 Components in 2% HNO3.
This standard is traceable to NIST SRM 3100 series. ISO 9001:2015 certified, ISO/IEC 17025:2017 and ISO 17034:2016 accredited.
12 month expiration date.
Components: Copper, Manganese, Zinc at 50 µg/mL, Iron at 100 µg/mL.