HI7040L DO Solution, 500 ml

Zero oxygen solution for HI 9146, HI 98186, HI 4421 and HI 2400

Zero-point calibration for oxygen sensors for measuring dissolved oxygen, 500 ml bottle.

HI 7040L has 2 mixing elements. A 500 ml bottle containing the solvent and a 35 ml vial with the reagent.

The mixed solution should be used within one month.