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.
BL983315-1 TDS Mini Controller 0.0 to 199.9 mg/L (ppm) - 230V
BL983321-1 TDS Mini Controller 0.00 to 19.99 mg/L (ppm) - 230V 

