HI-7040L is a bicomponent zero oxygen solution designed for calibrating both polarographic and galvanic dissolved oxygen sensors. By simply immersing the dissolved oxygen probe in the solution users can quickly calibrate to 0% oxygen concentration, allowing for accurate follow-up measurements of dissolved oxygen in the sample. Hanna dissolved oxygen solutions are produced using reagent grade chemicals in a temperature controlled environment.

• For polarographic and galvanic DO sensors
• Prepared with reagent grade chemicals
• Hassle-free, easy to mix chemical component bottles
• Air tight bottle with tamper-proof seal ensures quality and freshness of solution
• Bottle is labelled with product code, lot number, and expiry date