Neptune Conductivity Calibration Solution - 53.0 mS Neptune Conductivity Calibration Solution - 53.0 mS is a calibration solution for the Neptune Apex Salinity and Conductivity Probe, used to help confirm accurate conductivity-based salinity readings. 53.0 mS Calibration for Neptune Conductivity Probes This solution is used when calibrating a Neptune conductivity or salinity probe through a compatible Apex system or PM2 conductivity module. Proper calibration helps the Apex report more reliable salinity or conductivity data for reef aquariums, saltwater systems, and mixing-station monitoring. Neptune Conductivity Calibration Features 53.0 mS conductivity calibration solution Designed for Neptune Apex Salinity and Conductivity Probe calibration Useful for calibrating conductivity readings in compatible Apex systems Helps maintain more reliable salinity trend monitoring Suitable for PM2 conductivity calibration where supported Useful during new probe setup, probe replacement, or calibration checks Single-use calibration fluid format helps avoid contamination from repeated use Calibration Solution Specifications Product type: Conductivity calibration solution Calibration value: 53.0 mS Compatible use: Neptune Apex Salinity and Conductivity Probe calibration Compatible hardware: Apex salinity input or PM2 conductivity module where supported Use case: Conductivity-based salinity calibration and probe setup Calibration Use Notes This fluid is intended for Neptune conductivity probe calibration. It is not a general refractometer calibration fluid. Avoid contaminating the solution with aquarium water, old calibration fluid, or probe-storage solution, and use fresh solution for the most reliable calibration result. Calibration Directions Rinse the conductivity probe with clean water, gently remove excess water from the probe body without drying the sensing area aggressively, then place the probe in the calibration solution during the Apex calibration process. Allow the reading to stabilize, complete the calibration task, and return the probe to a stable high-flow area in the aquarium or sump. What's Included One Neptune Conductivity Calibration Solution - 53.0 mS packet