Increases pH up to 9

not guessing

Multimedia-friendly for measurements across a range of environments

re-calibrate your meters periodically or if testing TDS or conductivity levels in wide or different ranges

Acid Tubing Suitable for Bluelab pH Controller and pH Controller Connect - 4m aquaculture water quality Increases pH up to 9Replacement pH adjuster dosing tube for pH Controller (13 ft 4 m) Acid dosing tube suitable for the Bluelab pH Controller (CONTPH No longer available) and pH Controller Connect (CONTPHCON No longer available) 4m 13ft Includes joiners (2x reducing 3 1. 6mm, PVDF) Acid Alkalai Tubing (PTFE) As a guide, Bluelab recommends the following maximum concentration for commonly used acids and alkalines: Nitric Acid = < 35% Phosphoric Acid = < 85% Citric Acid = <