Reagent to calculate the Nitrate Nitrogen. Includes dropper. Contains 30 ml. Item #: 6876
It is recommended to change your reagents at least annually, preferably every 6 months, after opening.
We recommend ordering extra caps and droppers. The quality of the droppers has declined over the years, and we are seeing reagent discoloration as the droppers degrade.
NOTE: This product is limited to 2 per shipment.