"WardsSci000334"

This user-friendly meter has a long battery life and plenty of helpful functions.

This is a high quality, bicomponent zero oxygen solution made from reagent grade chemicals. Hanna dissolved oxygen solutions have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution.

This precision, self-contained data logger is ideal for measuring concentrations of oxygen in lakes, streams, rivers, estuaries, and coastal waters.