CALIBRATION SOLUTIONS FOR APEX SYSTEM
pH Calibration 4, 7 and 10 Standards.
- Select the 7 & 10 standards to calibrate a pH probe for a Saltwater Aquarium
- Select the 4 & 7 standards to calibrate a pH probe for Freshwater Aquarium or a Calcium Reactor
Conductivity Calibration Solution, 53.0 mS (salinity)
- 53000 µS Conductivity Calibration Solution
- Use it to calibrating conductivity probe for saltwater applications.
- Calibrating conductivity probes once every 3-6 months to keep readings reliable