TDS Range: 0 to 995 ppm (mg/L)

Why Choose Gel-Filled

Black Berkey elements are the core of Berkey's purification performance

Dissolved Solids (Heavy Metals) such as Arsenic

Long Sensor Cable: 3-meter (9

Hanna Instruments Zero Oxygen Solution Set (500 mL) dishwasher safe bottle TDS Range: 0 to 995HI7040L 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. Prepared with reagent grade chemicals Hassle free, easy to mix chemical component bottles Air tight seal to ensure the quality of the solution HI7040L is a bicomponent zero