- Ideal for Pocket Colorimeter II calibration
- Four vials of known concentration standards
- NOT AVAILABLE FOR INTERNATIONAL SALE
Spec Gel Secondary Standard kit--four sealed vials of known concentration from 0 to 2.0 mg/L for Fluoride.
Spec Gel Secondary Standard kit--four sealed vials of known concentration from 0 to 2.0 mg/L for Fluoride.
