WQC-ALK | High Purity Standards Alkalinity Standard, Calcium Carbonate at 1000 µg/mL in H2O

Calcium Carbonate Alkalinity Standard at 1,000 µg/mL in H₂O, 500 mL.

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.