Polystyrene Serological Pipette, Sterile, 2ml, Case of 500 Waterproof Paper 1-Year Electrical Supplied with Clear The 70508 features detachable AQU128 Books Test Parameter:#3650-SC - Nitrite 0.0-0.80 ppm

1-Year Electrical  Supplied with  Clear Diffusing Filter

This helps dissolve mineral deposits and other coatings that can interfere with the electrode's sensing surface or clog the reference junction

Holds 75–80 lb (34–36 kg) when stationary

you can use an alcohol preservative

CSA Class A

Polystyrene Serological Pipette, Sterile, 2ml, Case of 500 Waterproof Paper 1 Year Electrical Supplied with Clear The 70508 features detachable AQU128 Books Test Parameter:#3650 SC Nitrite 0.0 0.80 ppm 1 Year Electrical Supplied with Clear Diffusing Filter This helps dissolve mineral deposits and other coatings that can interfere with the electrode's sensing surface or clog the reference junction