The Neptune Systems 7.00 pH Calibration Fluid is a solution you can use to calibrate your pH probe primarily when you will be using it in a low-pH application such as a calcium reactor. It is not usually used to calibrate your pH probe for use in your aquarium itself.
Neptune Systems 7.00 pH Calibration FluidFluid
incl. 19% VAT plus Shipping Costs
Delivery time: approx. 1-2 working days