Fluoride Anion IC Single-Component Standard from Sodium Fluoride at 100 µg/mL in H2O. This standard is traceable to NIST SRM 3383. Ion Chromatography standards from Environmental Express are prepared from high-purity salts in 18 mega-ohm (MW) water. Packaged in DOT-2E polyethylene bottles. 

18 month expiration date.