ICP Multi-Component Quality Control Standard with 1 Component. This is Solution B of the 2 set Solution Set QCS-1.
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: Sulfur at 100 µg/mL in H2O.